It can be very frustrating when you go out to hop on your Jet Ski and find out that it won’t start. I’ve created a list of the most common reasons why your Jet Ski won’t start and what you can do to fix the issue.
WARNING! Batteries and the starting system of your jet ski carry HIGH ELECTRICAL CURRENTS which can hurt or seriously harm you if you don’t know what you’re doing. If you don’t know what you’re doing please have your local dealer look at it for you.
Dead Battery
Having a Dead Battery is usually the biggest reason why your Seadoo, Yamaha, or Kawasaki jet ski won’t start.
8 out 10 times it’s the battery. Even if you charged the battery or it’s a new battery it still can be the battery causing the jet ski to not start. Even if you think the battery is good, check the battery. We talk more below about how to check the battery.
-If you put the key on and nothing happens then the battery is completely shot and needs to be replaced.
-If you put the key on and the display turns on, but when you press the start button and all you hear is clicking that means the battery is weak. A weak battery will need to be charged.
You may also like this post: REASONS WHY YOUR JET SKI BATTERY DIES
To charge a battery you want to use a smart battery charger that does not exceed 2 amps. Also, you need to let the battery charge for hours, or overnight to get it to be fully charged. To keep the battery from dying all the time I highly suggest getting a Solar panel like this one. Just hang the solar panel off to the side when you’re not using the jet ski.
Sometimes you’ll need a new battery. Your local dealer can help you find the correct battery for your machine.
One Solid Click or Thud
If you go to start your watercraft and all you get is ONE solid click or thud then the Starter Relay has gone bad. Also, you know the starter relay is bad is when you press the start button multiple times before the jet ski will finally start.
I have even had customers tell me the procedure to start their watercraft, like waiting for the dash to turn off then you press the start button 11 times while tapping the handlebars 4 times before it will start. There is no special procedure for starting a jet ski and if you have to do something very similar then you need a new starter relay.
The starter relay is the device that sends the power from the battery to the starter motor to turn the engine on. The way you determine if the starter relay is bad or if the battery is bad is by the clicks. A bad battery will cause the the starter relay to make multiple quick clicks while a bad relay will do only one click when you press the start button.
Your local dealer will more than likely have Starter Relays in stock. For some model Jet Ski’s I highly recommend you let the dealer install them as some can be very painful to install. It’s only a couple of wires but the location of the relay can be very difficult to get to and having the dealer do it could be worth it.
Battery and Starter Relay are Fine, now what?
If the battery and starter relay seems fine and has passed all test above then I would check the battery again. There have been plenty of times where the battery charger says the battery is charged and ready to go but when I put a load tester on the battery it was a different story.
I would even take the battery to your local dealer or even an auto parts store to have them load test the battery to make sure its okay.
If the battery passed the load test, the gauges come on, and the starter relay is good or has been replaced then you only have a few more options left. The next thing in line is the Starter and it could have gone bad. It’s not common for the Starter to fail, but the starter relay and battery will fail eventually because of the stress they go through (they’re wear-and-tear items).
If you have gotten to this point then you’ll need to take it to your local dealer. If the problems are beyond the battery and starter relay then something is going on beyond your control. Your local dealer can hook the machine up to the computer to see what is going on and what needs to be fixed.
Sucked Something Up
It’s rare, but one reason why your jet ski won’t start could be due to you sucking something up. A stick, rock or even rope can get in there and wedge itself in keeping the pump and also the engine from spinning over.
I go into more detail about this here. Usually, when you suck something up you notice it, but maybe a friend returns the machine and doesn’t tell you about it and this would lead you to this conclusion.
Sum Up Jet Ski Won’t Start
- Why your jet ski won’t start can be a bad or weak battery, bad starter relay, bad starter motor, or you sucked something up.
- 8/10 times a jet ski won’t start is due to a weak battery or bad starter relay.
- In rare occasions, the key or other electronic parts could be the reason why your jet ski won’t start.
- If your jet ski clicks once when you hit the start button then it’s more than likely the starter relay.
- If you have to press the start button multiple times or put the key on and off before the jet ski starts then it’s a bad starter relay.
- If your jet ski clicks multiple times when you hit the start button then it’s a weak or dead battery.
- If you’ve put a new battery in your jet ski and it still won’t start then it could be that the new battery is dead and needs to be load tested.
- Never go off on what a voltmeter says but instead what a load tester says when checking if a battery is good or not. You can get load testers at many stores but most auto parts stores will have a load tester you can use for free.
- If your new battery load test fine and the watercraft still won’t start then it could be bad grounds or other electrical issues.
Justin says
Hi mate i got a seadoo gti130 2012
Iv been riding it for past 4 days about 3 hours a day, yesterday i went to start it and just kepted sounding like it wanted to start but it wouldnt fire up, i tried 3 times then it started, i rode for about 10 mins turned off and then it wouldnt start
Pushed jetski along beach to trailer
Any chance you would no what it would be mate? Starter motor, battery, spark plugs? Jetski just hit 30hours
steven says
If you tried 3 times to start it then it’s a good chance it’s the starter relay. If the starter relay doesn’t fix it then it would need a new battery. It’s very rare that it would be the starter motor. If it was the spark plugs then it would run rough, but it never hurts to replace the spark plugs. I like replacing my spark plugs every year but I doubt that is your problem.
Steve H says
Hi Steven
Our seadoo GTX is not starting through the starting button, but if manual start (we put jumper wire to the starter relay) is done the unit is working. What could be the possible problem
steven says
Sounds like you need a new starter relay.
Ramces says
Have two identical a 2011 Gtx seado won’t start, display comes on but nothing happens,says it’s reading keys, have about 7 hours on both kinda funny both acting the same
steven says
Most likely a dead battery. If both of them have very similar hours then they both get used the same and if they still have the original battery in them then its time for new ones. 7 hour is quite low for a watercraft that is 6 years old, riding them more often will help keep the battery charged. Or you can use a Solar panel to keep the battery charged when you’re not riding them. Also, those year models did have issues with reading the key, you need to take it to your local dealer so they can update the software and the DESS post so it can recognize the keys better.
Tyler says
Hi Steven,
I have a 1996 Kawasaki 750 ss. I recently have taken it out 3 times and randomly when i am on the water and want to start the ski back up it would not start or make any noise. This only happens on the water. When Im on the trailer it always starts up. It will start back up on the water eventually when it wants to but I find that strange. Just bought it a month ago and looks clean and rides great! Got any ideas on what could be causing this? Possible starter relay or maybe even the spark plugs? Thanks
steven says
It could be many things and it would be best to take it to repair shop. If the ski starts on land but not on water it is usually the battery do the extra power needed to start on water. It sounds like your problem is deeper than that. It could be the angle the ski is on when on the trailer compared to the water that allows it to start. It’s so hard to tell and it would best to take it to a repair shop. I would start with the battery and the starter relay first to see if that fixes the issue.
Tyler says
It has a brand new battery that I put in so possibly it’s the starter relay. Thanks for the support!
joe says
hi steven
i have 2006 seadoo gtx , It turns over but wont fire up, the sparks and coils in good condition, i changed the injectors, fuel pump and TPS sensor and still have the same problem no fuel spray out from the injectors, the voltage coming to the injectors is 10v , what could be cause this issue ?
steven says
It’s hard to say, the best bet is to take it to your dealer and let them hook it up to the computer to see the fault codes. If I had to guess it sounds like the ECM is not sending the signal correctly to the injectors. This may sound silly but make sure to have fresh gas in the tank. It’s easy to overlook the simple things (like gas) that could be causing the problem. But above all else, something like this needs to be taken to a dealership to see the fault codes.
Austin says
Hi Steven I have a Yamaha gp 1200r I just bought 2000 model I rode it the other day maybe a mile and put it back on the trailer just wanted to make sure it ran before I bought it today I ran it and it did not have near the power as it did the other day and now it won’t crank I got the starter button and it clicks then sounds like a wheel is turning or something but the motor is not turning over battery checks out good with my meter!
steven says
It sounds like the starter went out. It would be best to have your local repair shop confirm this.
Austin says
Would the starter going out cause it to lose power and just completely shut down
steven says
No, but if you’re hitting the start button and it sounds like something is moving but the engine is not turning over then it’s a good chance it’s the starter motor. It’s impossible to fully diagnose anything over the internet and the best option is to take it to your local repair shop to see what they say.
BA says
2013 Gtx 215 won’t start. Replaced battery, hit start button, can hear the solonoid engage but it gets a half a crank.
steven says
If it’s a new battery and you get one solid click from the starter relay then the starter relay is bad. If you get multiple clicking then the battery is weak. Always be careful when dealing with HIGH CURRENT items like a battery and the starting system. When in doubt visit your local shop.
Cory says
2009 Yamaha FX Cruiser SHO. Battery tested good, replaced the starter relay and still get a single click that seems to be coming from behind the fuse box which is where the starter relay is. Is there anything else that could cause a single click when attempting to start this ski. Any assistance would be greatly appreciated.
steven says
It could be many things, from the starter, a low voltage relay, too many other factors. It’s best to have your local dealer look at it. You could also check out the green hulk forum here as they deal with jet ski’s and someone might know the exact answer.
Anders Jolhed says
Hi! I have a rxt x as rs 2011. Old battery got the panels starting but battery was to old so I replaced it with a new. Battery charger shows battery is full but my Sea Doo is completely dead with the new battery. Any ideas please?
steven says
Never trust a battery charger to tell you if a battery is good. A battery needs to be load tested to see if it’s any good as battery chargers can sometimes lie to you. I’ve seen new batteries dead and not able to take a charge so I would see about getting it load tested or get another one first.
Blair H Jones says
Ran a 2005 GTI, fresh off the sales floor last summer (2016 n bought used). Was dumb enough to pull into a shallow water boat ramp n suck up gravel. Changed the ware ring and installed a New stainless impeller. Put New battery in it, conventional gas, etc.
Now engine only bumps when hitting start button. Battery check at Advance auto, new and good.
steven says
2005 GTI would be a 2-stroke and 2-strokes have a thinner drive shaft that can bend easily if you suck something up. Would be best to have a shop look at it.
blair H jones says
Shafts straight. Checked it all out when I installed the new ware ring and impeller. The engine does a ooh-ahh (for lack of a better sound spelling) when the start buttons hit. Like its getting only a 1\16 of a full rotation then dies until start buttons hit again. No continuous cranking to start
I’m starting to suspect the batteries my wife bought. Although these batteries cranked all our PWC’s when new last summer, they did go low over the winter due to not trickle charging. They are Wal Mart brand Everstart Premium Powersprots series (or something like that) and I’m thinking that the auto shop, due to not testing under load, recharged them, did the test, and stamped them good. They don’t seem to have a CCA or CA label on them which is suspect also. I’m pretty sure this ski needs 270 CA to crank reliably.
Whats you input on these batteries wife put in them ?
steven says
Be careful with drive shafts as they can “look” straight. It’s best to roll them on a flat surface. You never mentioned checking the starter relay which is easy to replace on that model. I would see about replacing that or checking to see if power is leaving it and going to the starter. I wouldn’t trust those cheap batteries either, I’ve had a number of those seem fine and charge fine but really was dead. Always buy a good sealed battery for jet skis, they cost more but hold up way better. If the battery is good and power is going to the starter then it could the starter that is worn out or has broken/jammed Bendix. Or you sucked up something that broke something on the inside of the engine past the drive shaft. I would start with the starter relay, if it’s brown then it definitely needs to be replaced, if its black then might still be bad.
Brandon says
I have a 2011 wave runner vxr started fine at first parked it then went to ride again and won’t crank. Will crank with battery charge as soon as charger is removed it idles weird and starts beeping showing engine on display have a new battery I put acid in now waiting for a full charge just wasn’t sure if it’s the battery or not..
steven says
Sounds like a battery. If I were you I would stick to seal batteries as the ones you fill can’t always take the abuse of the waves that a jet ski goes through. I talk more about batteries here.
Devin says
My 2004 gtx supercharged don’t start but before this happens i need to press multiples time the start/stop button to finally start.Now don’t star when i put the lanyard a long beep coming up and the cluster just said the sea doo word and i check the code is p1682.The code means ems comunication error.I change the ems 2 weeks ago.I think maybe is the battery dead or the starter relay because before this happens i press the button more than 3 time to finally start the jet ski.Any suggestions?
steven says
Pressing the start/stop button multiple times before it would start is a sign of a bad starter relay. The only way to solve the communication error is to take it to a dealer as it sounds like when you got the ECM replaced you didn’t get it matched to the gauge and as a security measure, it’s not communicating. No way around this take it to the dealer.
Matt says
Hi Steve I have a 1995 Yamaha Wave Raider 700. It runs like new, has a dual carb setup which is in great shape, and has never left anyone stranded on the water until recently. I have trusted the ski enough to ride out miles from the dock. While riding the other day, the ski shut off and after that would crank but would not start.
We were lucky to have someone nearby tow it back to the dock. Once we had it back at the dock it started up just fine. I took it out on the water and had it at wide open throttle and it ran great. We had no more issues that day. I don’t believe its a problem with the battery because no connections are loose, and the ski does not overheat at all. Runs on 50-1 premix and the plugs were changed a month ago. I don’t think anything was stuck in the pump either. I’m puzzled as to why it would shut off like that and then run perfectly fine a half hour later. Was hoping you might have an idea of what was going on with it. Thank you for the help
steven says
It’s hard to pinpoint anything since there are so many options. Could be old fuel line, bad gas, on/off fuel switch going bad, carb got clogged for a bit, water in the electrical for a bit, kill switch going bad, etc. Best thing to do is have a shop look at it. It’s going to be normal for a ski as old as yours (22 years-old) to have odd things to happen to it.
Matt says
Hey Steve thank you for the info. Those are some good possibilities. It could definitely have been something with the carbs. I know that the ski sat for a couple of years before I got it because of a bad wear ring. After draining the old fuel, replacing the wear ring and firing it up it ran great so surprisingly it didn’t need a carb rebuild. Its been a while since then and it has been running great but who knows the carbs could have definitely gotten clogged for a little because they have not been rebuilt in quite some time.
There could also be a good chance there was some water in the electrical. My brother did say that the ski hit a wave right before it shut off. Or maybe the harness for the start/stop switch has some corrosion. If the ski shuts off again I will take a look at the wiring and see what kind of shape it is in
Matt D says
HI Steve just bought a 2012 rxpx 260 with only 30 hours on it. Machine is like new. When I try to start gauges turn on but that’s about it.. no warning lights or anything would this be week battery or starter relay?
steven says
Sounds like a weak battery. A 2012 RXP-X would use an ETX30L style battery.
chris says
Steve, you describe it as a single thud, I hear it as a “chug.” Are we talking about the same thing?
steven says
Probably talking about the same thing. If you’re hearing one single noise when you press the start button then it’s probably the starter relay. If you hear multiple noises fast then it’s probably a weak battery.
Rick Morris says
First, great site with a lot of great information.
I have a 2003 Yamaha waverunner xl1200 that I pulled out from winterizing. Put charged battery in, cleaned everything up and tried to fire it up. I get a few sounds from it.
I get an attempted turning over, kind of like a swooshing sound and then some clicks/grinds.
Was thinking of replacing the starter relay. I changed the spark plugs just to rule that out.
steven says
Sounds like a weak battery. If you’re getting some turnover and many clicks that would mean the battery does not have enough power to start it. Even if your battery charger says its charged it could be lying to you. Either that or you have something blocking the engine from moving or a bad starter motor. I would do the battery first.
Rick Morris says
Spot on!
Bought new battery, charged it up overnight. Just installed it and fired right up.
This is my first year winterizing. I used the hose adapter and when starting noticed a lot of exhaust smoke (blue). Is that normal and should I be worried?
Was going to go drop it in the water and run it at the launch to test things before taking family out.
steven says
Glad it worked out. Looking at your past comments it looks like you have a 2-stroke jet ski. It’s going to be normal to see some blue smoke, more if it’s out of the water and even more if you haven’t fired it up in a long time. Since you said it was winterized and you just started it up I would go ahead and replace the spark plugs since most people fog the engine when they winterize them and that can foul the plugs.
Rick Morris says
Thanks again. Ran like a champ! Since I was having issues starting for the first time I took the time to replace plugs right along with battery.
Thanks for all the advice and guidance.
John says
Hi Steve, 2007 Kawasaki Ultra LX starts fine with new battery. Then last couple times BAT shows up and beeps for few seconds on start up. Took battery home and fully charged after checking it with a voltage meter. Anything else we should check. Thanks
steven says
Never trust a battery charger or a volt meter to determine if a battery is good or bad. A battery charger or volt meter goes off how much voltage the battery has, but it’s not voltage that starts a motor but amps. To measure amps you’ll need a load tester. But you might not have a battery problem but a rectifier problem. It’s best to have a local shop look at it.
John says
Steve, Thanks for the info on battery. Did a load test and it is still good but not as good as it can be. Within the low normal range.
That being said…can a battery with low amps cause the jet ski to run only at 3000 rpm and then all of a sudden run normal after battery charges up when running?
When jet ski first starts up we get that low bat warning and flashing light. You can only then throttle to 3000 rpm or so. Basically about 5-7 MPH. Then after about a minute or so the ski then runs normal and then accelerates.
Could that be bad battery causing the ski to protect itself with the warning light on battery and the self charges in water.
Thanks for your time. John
steven says
Could be a bad battery or maybe even a bad or going bad rectifier. The best thing to do is let a shop look at it.
Kelly says
Hi!! I have a Polaris JetSki We just replaced the battery.. and when we go to start it it sounds like it wants to start but won’t.. but when we hook it up to a battery charger it starts right up and will run until we shut it down.. then we have to repeat with the battery charger…any ideas?
steven says
Could have gotten a dud battery. Get the battery load tested at a local battery store or a place like Autozone.
Al says
Hey steve i just bought a 2010 yamaha wave runner vx110 and i changed the oil and spark plugs and i ran water through it using a hose, while it was running i kept reving it and after 5 min of doing that white smoke came from the back than i cut it off and when i tried to start it, it wouldnt evn turn and i doubt its the battery because i was using a booster box to jump them. Any thoughts of what the problem could be?
steven says
From you saying you ran it on the hose makes me think you hydro-locked it. There are special procedures to follow when running a jet ski on a hose that you must follow or the engine get’s hydro-locked. It’s best to take it to a dealer or a repair shop to have them look at it.
Mike says
I have a 2008 STX 15f. I replaced the battery so it’s not a battery issue. When I click the green start button, I hear a click but the starter doesn’t turn the engine over. I tried jumping the 2 terminals with large red wires at the rear of the ski – is that the starter relay or something. Anyway doing that didn’t do anything. It didn’t even make the click like you do when you press the green button. Any ideas? Thanks!
steven says
Yes, those two big terminals with red wires is the high power side of the starter relay, avoid jumping those two points as its dangerous. Even if it’s a new battery I would still check that by taking it to an auto parts store and let them do a load test on it. I’ve seen new batteries go bad out of the box before. If that’s not it then it’s either the starter motor or something keeping the engine from spinning over like it’s hydro-lock, blown, or something is in the pump. It would be best to take it to a repair shop to have them look at it.
Marin says
I have an rxt xrs 2014 Yesterday he first started beeping and it says low voltage it ran 3 or 4times after that and now he wont start the engine Light is on when i hit the start button it jus makes 2 clicks and wont start? I would apricate any help
steven says
Probably a bad battery. It would be best to take it to a repair shop to have them look at it.
Adam Jones says
Hi Steve I have a seadoo gtx 4-tec that won’t start properly it turns over and try’s to fire revs to about 350rpm but then cuts off. Reading all your other comments sounds to me like it could be the starter relay just wondering if you had any other thoughts? Many thanks great site
steven says
If it’s turning over then it’s not the starter relay. The way you tell if it’s a bad starter relay is if it doesn’t turn over at all or just make one click. If it’s turning over then it would either be a bad battery or starter motor. It could be even a bad ECM not telling it to fire off. The best thing to do is take it to a repair shop and let them look at it.
Chris says
I have 2015 GTX is limited 260 and when I push starter button nothing happens. Dash won’t light up. When u attach key… same thing. Battery has been tested and shows it’s ok.
steven says
I would try a new battery, I’ve had batteries “test fine” but actually was bad. On that model, you should be able to press the start button first and the gauges power up and then put the key on. If that doesn’t happen and you put a new battery in it then the next step is to take it to the shop. I would take it to the shop anyways, the battery in that model is hard to get out.
Kevin wilson says
I have a 1996 seadoo gti new motor ,new battery ,new starter relay . Press start buttons gauge lights up the four red lights come on for the battery ,temp,gas and oil then go off no beep .low gas stays on I have 2 gallons in the machine . Plug my dess key in still no beeps seadoo won’t start ?
steven says
Your ski has a lot going on. To be fair it is over 20 years old and things not working will be common. So many things to try, but maybe it’s the DESS post that is bad? Just hard to tell on a ski this old, it would be best to take it to a shop that still works on 2 strokes.
JT - John says
Steve, i have 2004 SeaDoo RXP. These past two days, it starts, runs great for about 90 minutes or so then dies, like you pulled the lanyard. There are no beeps that would indicate the key is in place.. try and try and try no power. I tow it back in, get it back home an hour or two later, put the key on and she will start like nothing happened… This has happened back to back days. Any suggestions.
steven says
It would be best to take it to a dealership to let them look at it. Sounds like a bad key or DESS post or ECM but it could also be many things.
Jared says
Hello sir, from reading you page and your replies i’m certain all i need is a starter relay, however i figured i’d still ask. Last week ski would try to start over, sounded like starter was hitting, PTO would rock back and forth, charged the battery a bit and she fired right of. This week launched the ski and went to start, nothing, not a sound, not a click, nadda. Brought it home boosted battery, now when i plug the safety switch in, i can hear the fuel pump prime, but when i press start, she gives me one solid hard click from the relay. Then she’ll do it again and again all while depressing the start button. But she will not fire off. Before reading this i was preparing myself for a starter replacement. Thoughts?
steven says
I would start with the starter relay first and then replace the battery. If that doesn’t fix it then you need to take it to a repair shop to let them look at it.
Jim says
Have a 2011 gti. When you turn off engine something keeps running. Sometimes when you attach the key and start then turn off it quits. Other times need to disconnect the battery. Sometimes it won’t start at all and you have to disconnect and reconnect the battery then it will start.
steven says
That is odd, never heard of this one. It would be best to take it to the dealership and let them look at it. I can only guess that maybe it’s the fuel pump still running which is not good at all.
Jim says
Thanks for the help. Appreciate it.
Joe Miller says
Thanks for all the time you put into helping others. This thread is great. Bought a pair of 2013 Kawasaki STX-15Fs last summer. Love them, BUT, one keeps losing charge. Replaced the mis-sized small battery with correct size and it made it 3 weekends, but now, when I go to start, I get one click, then several smaller ‘clicks, but nothing else. Display does not show the battery low, as in previous instances. 3rd time with this happening, and on the first two, I towed back to trailer with 2nd ski and got water in motor(question/topic for a different day). Any ideas? Starter Relay? Rectifier? Other? Thanks again!!!
steven says
This is a tough one, I recommend letting a dealership look at it. But if I had to guess I would say the rectifier is bad and draining the battery when it runs?
Jerry says
I have a 1996 Tiger Shark 900 Monte Carlo that hasn’t been started in several years. With a hot battery it will not crank over at all. Only makes one single click. Changed starter solenoid and got the same results. The engine rolls over when I turn the drive shaft so it is not seized. Could it be the starter relay and if so where is it located? Any help would be greatly appreciated.
steven says
It’s not often that someone talks about a Tiger Shark. I think it might be your starter motor that is bad if the engine moves freely, the clicking could be the starter motor just giving up. Make sure the wiring going to the starter motor is good and tight and not corroded, the jet ski is 21 years old so there could be other issues too.
Jerry says
Any idea where the rectifier is located and the best test method in checking it? There are any marine shops near me or I would take it in for diagnosis. Thank you again!
steven says
The easiest way to test if the rectifier is bad is with a volt meter. I don’t recommend doing this unless you have some experience with a volt meter and working on engines before. With the jet ski out of the water turn it on and measure the voltage of the battery while it runs. After firing up the battery should be charging around 14 volts. If the battery is at 12 volts or lower then this tells us something is wrong the charging system, it could be rectifier or stator or wiring or electronics. Remember you can only run the jet ski out of the water for about 30 seconds.
Phil says
Hello Steve. My daughter and her boyfriend were riding my 2016 Yamaha V1 sport this past weekend. The ski was running great when all the sudden it beeped 4 times, the warning light came on, then it went completely dead. I had to tow them in with my pontoon. I took the ski out of the water and it will not do anything. The gauges do not light up and it doesn’t click when you turn it over. I charged the battery but it still doesn’t do a thing. Got any idea what would make a jet ski completely shut down. It’s a 4 stroke with 12 hours on it. Any help would be appreciated.
steven says
That is very odd. Since it so new I would take to the dealership and see what is going before messing with it just in case it’s a warranty item. The only thing I would maybe check is to see if the battery connections are tight. I’ve seen loose battery terminals stop a jet ski and throw odd codes before.
Troy says
Hi Steve. I have 2003 sea doo 4 Tec. Got it used. The guy I bought it from said the starter relay was going bad, so I changed it. It ran great all morning, then after sitting on the beach for a couple of hours, I turned the battery on to go home and it tried to start itself. After wiggling the wires around, it started normally. Then when i started going and bouncing, it would cut out again. After about 10 min of idling, I had to get back to the dock, it ran perfectly again. I cannot find any loose wires. Have you ever seen this?
steven says
You said you turn the battery on, this must mean you have a battery switch. Jet skis don’t come with battery switches and it’s not the best to have them because they create an unneeded load between the battery and the starter. This could be your issue as you have too much going on between the battery – starter relay – start motor because of a battery switch. But if someone put a battery switch on a jet ski then it must mean it was draining the battery and you could have an ECM problem. Don’t forget to check the obvious stuff like the battery’s condition and if the connections are tight. If anything it would be best to let a dealership look at it.
Casey A Bowers says
I have a 1998 seadoo gts jet ski. It will not start. I replaced the battery due to it being junk. Then replaced spark plugs. Still would not start but would crank. If you put starting fluid or gas in carb it will run. So I blew threw all glass lines and vacuum hoses. And checked all hoses for leaks. I Found no file going to carb due to lack of vacuum. So I rebuilt the carb. And it ran for about 30 seconds then stopped. So I tried to start it again with starting fluid and it started up but died any ideas?
steven says
Try replacing the fuel lines and fuel selector.
Thomas says
1999 yamaha 3 cylinder charged for couple hours and go to start I get the word start on dash and it makes a weird buzzing noise when I hit start. Battery bad? Please help thanks
steven says
Buzzing could be a messed up relay, either starter or a smaller one in the electronics box. It’s best to let a repair shop look at it.
del says
hey i have a 1997 kawasaki 750 zxi i know the battery is bad but i got this jet ski from a family member that could not get it to run and i dont want to sink a lot of money in it so what im asking will it get enough power thru jumping it off with my truck to make it start it cranks great but no fire to plugs no lights on the panel btu the fuel gauge works and it has plenty of oil i just want to hear it start before i replace the battery
steven says
Never jump a jet ski battery with a car or truck, you’ll fry the electronics. The only options you have is let the battery try to charge or buy a new battery. It’s best to let a repair shop look at it since you may have electrical issues if no lights come on.
Fernando says
Hey Steve just a quick question , I have a 1994 Polaris Sl 900, It has been sitting for about 3yrs and has not been started since then. It worked just fine before but I recently tried to start it ,but will not turn over , I tried turning the shaft by hand but it seems like the motor is locked, could this happen? or maybe battery ?
steven says
Yea, if the engine sits for years and was not fogged then rust can form and lock the engine. It’s best to do storage procedure before storing a jet ski for a long time. To get it fix might require a teardown, but I would drop it off at a local repair shop to see what they say.
James Owens says
Hi. I have a 2007 kawaski stx15f. New battery from Walmart. This is the 2nd one in 1 month. No lights on panel. No clicking. I even tried to jump the starter solenoid with nothing. What is my next move.
steven says
It could be a bad kill switch or blown fuse, it’s best to take it to a repair shop let them see what is going on with it. Too many possibilities and a repair shop might be the best way to go with electrical issues.
Mauricio says
Hey Steven I have a seadoo spark that was not starting or gauges turning on at all so I replaced the battery because the other one tested bad and now that it has the new battery in, still nothing turns on as though there is no battery at all
steven says
It’s best to take it to a dealer, some models sparks had a wiring issue where it would rub. It could also be a bad kill switch or even a blown fuse. Also, don’t forget to make sure the battery is connected the right direction – I’ve done this before and can blow a fuse.
Mike says
I got a tiger shark tsl 900 I have 2 problems 1 st is hard starting turns over good but takes a bit to start 2 no is when you do finally get it running you have to hold the gas down and it hesitates then just goes full bore only you basically get idle or super fast any help would be great
steven says
Sounds like a clogged carb, but it can be many things as those Tiger Sharks are a handful.
Sam O'Niel says
Hey man. I have 2 95 seadoo Xp’s I’m having trouble with. Yesterday they were running fine when my buddies took them a little shallow and sucked rocks into both of them. I took apart the jet and had to replace the wear rings. Easy enough. But now both won’t start. They have new batteries that are holding charge and I suspect the solenoid so I ordered new ones. I tried jumping the solenoid with a screwdriver. It turns over that way but won’t start. Both don’t respond at all when I put in the key and push the start button. No click or anything. Any ideas??
steven says
Could be a bad key switch.
Randy says
Hey Steven, we have a 2005 Seedoo GTX that is giving us starting fits this summer. It starts intermittently and has a new battery. One time it will start, the next time it won’t. We’ve had it into the shop twice and they can’t replicate the problem. Starts right up for them every time. It almost seems like it could be a loose wire somewhere. Are there wires in the steering assembly at the start/stop switch that could be loose? Called the shop again today and they think it might be the starting post. What’s your opinion. I’m not a mechanic and can’t find any you tube videos on any starter problems with the key post or start/stop switch. Ideas?
steven says
I would have them clean all the grounds to perfection and the connectors that go to the battery. I’ve seen dirty grounds cause odd problems. They really need to clean them, there is like 3 on the front of the engine that should be cleaned well. I’ve also seen fuel rail or injectors go bad and cause a jet ski that will start sometimes but not the other time. It was like a leaking fuel injector that flooded the engine but it would still spin over but never start. There are many options to go from and the dealership should be able to figure it out or use their chat with Sea-Doo to figure it out.
Cassidy says
I have a 95 Sea-Doo GTX. I’m sure the starter relay is going because I have trouble starting it but also I think there’s some sort of fuel issue because when I try to start it, if I try to start it, it will chug and then I will pull the throttle open all the way and then it will start. Today it actually died spontaneously in the water twice. I have a guess that it has to do with the fuel issue or a carburetor issue. Any thoughts?
steven says
Sounds like carburetor to me, but it could be many things and it’s best to let a repair shop look at it hands on to see what the problem is.
Jason says
ive had my 2004 seadoo sit all winter in the shed and getting ready for the warm weather battery was disconnected the whole time I’ve connected it but it was flat so I charged it over night while the terminals where off as you should hooked the terminals on after being charged and started up had it running for approx 5mins on the Trailor with water then turned it off since then it won’t start again just making a clicking noise can a starter relay fail that quick also the button on the handle bars doesn’t Spring out the best can that cause a issue
Steven says
Yes, the starter relay can fail out of nowhere especially if it’s the old brown style one. The black Sea-Doo starter relay will be the better one to get. But you said you had it running on the hose and if you didn’t follow the correct procedure of turning the water off before turning the engine off you could have hydro-locked the engine and that would make it click. If that is the case avoid starting as you could do damage. You can buy a new starter button just about anywhere, they just pop out.
Jüri says
Hi, Seadoo gsx starting problem.When i press start button the engine makes half a turn and stops. It does it several times in a row. Starter solenoid is new, battery is good, cleaned grounds. I put a test light on the yellow/red wire from the ecu to starter solenoid and if i press start button the light comes on, but when engine makes half a turn only the light only makes a flash as long as the time engine makes half a turn. Is it possible to have a problem in ecu or what can it be? If i get the engine running it will start better, almost every time i press start, but still makes half a turn starts occasionally. It is like starter solenoid will loose signal from ecu and then stops.
Steven says
It might be a bad starter motor.
Sonii says
I have seafood 2015 jet ski. Yesterday I started after 4 months it did start and I went in water it stopped I try to start it is clicking but not starting on display it says BR. Please help me out
Steven says
I would start with replacing the battery. I’ve seen a weak battery throw up iBR faults on the gauge.
Graham says
Riding my 04 season yestadAy it just stopped and now won’t start it clicks once but wont start and key comes up on the dash
Steven says
Sounds like you sucked something up. Usually when you’re moving along and the jet ski shuts off something got sucked into the intake. You might not have heard or felt it but it does happen. The click would be because whatever is in there is keeping the engine from spinning over because jet skis use a direct drive anything that blocks the impeller also blocks the engine from spinning.
Geoff says
I have a Yamaha FXSHO and was out this morning cruising at about 60kph and suddenly no power (electrical). Motor stopped immediately and no power to anything. Completely dead. Brand new battery and showing good voltage. Any ideas?
Geoff says
I’ve just solved my mystery. Blown fuse.
Daniel says
Hello Steven, kind of you to answer all of these questions.
2006 Kawasaki STX-12F
I went for a ride yesterday and everything was fine. After the ride tried to install a battery tender adapter to the battery that would click-in as opposed to attaching with two clamps. I was having an issue getting the right angle with the screw driver I was using and gave up.
Today I try and start it won’t. maybe I need to ensure the termindal block tightly screwed in?
I took a video with sound to show my attempt to start it.
Heres the YouTube link:
https://www.youtube.com/watch?v=sMaB47kS49s
Thx.
Steven says
Usually, multiple clicks is a weak battery or a loose battery connection.
Maureen McAdams-Croushorn says
Hi, I’m female and new to jetskiing. I have a 1997 seadoo gti, ran good the first 2 times out, then on the 3rd time, it started to bog down at full throttle . Limped it back to the dock . It shut down so I tried to start it again, and now it just makes a loud click (clunk) sound and won’t turn over . Battery is charged, but it only clunks once and does nothing. I’m not sure what happened.
Steven says
Usually, when you hear one clunk it’s a bad starter relay. As for the bogging down, it will be a different story and a lot of things could be it.
Chris says
I have a 2007 GTX Seadoo and it ran fine last year. When I put the battery back into this year, I had trouble getting the gauges to come up, so I could start it. When you put the safety lanyard on sometimes the gauges came up and it beeped and sometimes they didn’t. When it did start everything seemed to work fine. I was riding it the other day and all the sudden it shut off with no alarms or codes and now it won’t initialize or start at all. Could this be a battery problem?
Steven says
It could be a bad battery, weak or poor connection, bad electrical component, and many other things. But I would start with the battery first and make sure the connections are properly connecting the battery.
Tom says
2004 SeaDoo GTI has hard time recognizing the key, Sometimes it beeps right away and other times it takes a long time for it to beep so you can start it. Could this be caused by a bad Dess post?
Steven says
Could be a bad DESS post or a bad key.
German Lazo Reyes says
Hello I have a seadoo gtx I was running and then stop for a couple of hours after that I try to turn on and just make a click click noise please can you help youwith an advice. Thank you
Steven says
If it’s one click then its the starter relay, if it’s multiple clicks then its the battery.
Bret says
I have a 2000 GTX that got water in engine compartment and wouldn’t start only clicked so I replaced starter relay and now only partially turns over want stay turning over I have to keep pushing starter over and over and I noticed circuit box and wires get hot and I hear some noise coming from circuit box . Also don’t make beeping noise when you stick key on anymore. Thanks
Steven says
Sounds like it’s hydro-locked. Avoid trying to start it and get it to a repair shop so they can remove the water from the engine.
Tony says
Hi steve running a 2008 seadoo – ran like dream today for 2hrs then went to restart on the water – nothing no click no thud – new battery 12 months ago and new genuine stater solinnoid- tried other learner key no good – dash instruments come up – but no start click or thud – biggest concern – no likely to get into mech for 2 weeks – so was unable to flush with water on return – salt was very concentrated today – btw disconnected and connected batt – still no good- tony
Steven says
Could be a bad DESS post or start button.
Pedro Contreras says
Hi Steven amazing articles by the way… I have a pair of 2018 season spark trixx. I was wondering if you can give me some tips on how to clean them after riding. As well as tips you think I should know as well.
Steven says
Here is how I clean jet skis https://www.steveninsales.com/how-to-clean-a-jet-ski-my-way/
And here are some tips https://www.steveninsales.com/jet-ski-beginners-guide-18-things-know/
pat says
Hi Steven
Have 1997 STX1100. When I hit the start button, I can here the starter turning but the engine does not turn over. Replaced battery with new one and a new solenoid. What could be the issue. Thanks Pat
Steven says
Could be either a bad starter motor or something in the engine is locked up like water in the cylinder.
Jack says
Hi Steven,
Thanks for your very useful comments on jetski starting. I hop you are able to provide possible direction or confirmation on the issue below.
2000 Seadoo RXDI
1. Won’t start. Battery depleted.
2. New battery installed.
3. With safety key inserted two short beeps occur. Electrical panel displays with status information.
4. The first time inserting the safety key with the new battery the double beeps occurred and then there immediately follow a long beep. This happened twice. I couldn’t find a reason for the long beep of which several are listed (wrong lanyard, defective lanyard, safety lanyard in too long without starting or bad MPEM.
5. An attempt was made a few minutes later and there was no long beep following the initial two short beeps.
6. With the two beeps and no following long beep, the red start button was pushed and there was a humming sound similar to what a spinning electric motor or the sound a small hydraulic motor might make. Nothing else happened. No clicks or other sounds like I am familiar with on automotive units when a solenoid or battery is weak or bad.
7. At the next attempt the humming sounded as soon as the double beep was heard with the insertion of the safety key, but without depressing the start button.
8. The humming sound continued on its own for a few seconds and then stopped.
9. The red start button was pushed and the humming sound initiated again until the red button was released. The start button checked to verify it was not stuck/sticking in a depressed position. It was not.
10. Time was taken again to verify battery electrical connections were tight, which they were.
11. The electrical box opened. What to me seemed a significant amount of water found inside. Water removed and the unit dried out, connections of all location checked and the attempt to start the unit again made with the same result as noted above, i.e. motor hum sounded as soon as the safety key was inserted, then stopped on its own and when the start button pushed the only sound was again the same hum as long as the red button is depressed.
Despite being a 2000 model it has only 107 hours on it.
Bad starter motor? Bendix not engaging? Other things I can check? I am told replacement of the starter motor is difficult and expensive due to time.
Thanks for any thoughts or direction. We don’t have a local dealer or repair so I would appreciate as much direction as possible before traveling to a dealer.
Jack H.
Steven says
I would start with the starter relay and then the starter motor. The starter motor won’t be easy but nothing is easy on any DI models. The honest truth is that any DI Sea-Doo I’ve run into always had some type of phantom electrical problem. You’ll fix one thing but another electrical problem will show up soon. Hopefully its something simple like the starter relay.
Jack Hinnenkamp says
Thanks. Based upon my experience with solenoids and the few PWC local technicians comments, I did not bypass the solenoid during the initial troubleshooting. No traditional clicking sounds, just the whirring noise noted in the earlier post. The whirring noise happens at the initial safety key is inserted on the dash for three or four seconds and then stops and then happens again when the start button is pushed. Just to be sure I decided nothing hurt through bypassing the solenoid and did so and the jet ski turned over fine – starter appears to be okay with that. Is the solenoid the most likely problem or is it possible that there is an issue with the MPEM? Can the MPEM cause the solenoid not to engage? I’m not getting a clicking sound when depressing the starter, only the whirring sound like a small electric or hydraulic motor spinning. It will do so as long as the starter button is depressed. I’m glad to replace the solenoid, cost is low, but I’m stumped by the whirring sound and wonder if there is a problem ahead of the solenoid. I have been unable to find this specific issue in talking with three technicians and looking at on-line postings. Many refer to the clicking of a solenoid as an indicator (which I don’t have happening) but no one has heard of a whirring sound happening under any condition. Any additional thoughts?
Thanks again for the first response.
Steven says
That sound was common in some DI models and early 4-tec engines. It’s the fuel pump and other compoents “priming”. Every time you put the key on or press the start button you’ll hear this humming like sound. I would replace the starter solenoid and then go from there. Make sure the battery is not connected when you replace it.
Bill Stampe says
Hi Steve
I njhave a 2005 GTX DI and it was running great. then my son took it out 15 minutes after I had just gone for a ride and it suddenly quit on him. We can start it but now it dies within 5 seconds in idle and quits immediately when moving the throttle. I replaced the spark plugs and checked all electrical connections but no luck. could it be a fuel pump or filter? looks like a monster job to get t out if it is
Steven says
Honestly, it could be many things with those DI’s. The DI’s from my experiences always get some type of phantom issue that makes it act odd. The fuel delivery system sounds like your issue and it could be the fuel pump or fuel rails. It’s hard to tell on DI’s but fuel seems to be your issue. It would be best to take it to a repair shop especially one that deals with 2-strokes. Those DI’s are cursed if you ask me.
Jordan says
Hey steve,
I’m 16 years old and my grandfather owns a 1999 Seadoo gtx he’s no longer physically able to A) ride and B) work on it. Me just getting my boating license have now decided to turn this into my little project to fix it up, so here’s my problem, I put the key on and only 50% of the time the dash board comes on, and when it does it and I go to start it, it gives a kick and dies out, we tried charging the battery and that didn’t seem help. When we do get it to start it dies when you don’t touch the throttle and you have to take the key out and try again. Do you think I need a new battery? Or could this be something else. Thx in advance
Steven says
I would start with a new battery first.
Cory Hardy says
Hi Steve, i have a 1991 Kawasaki 650TS and am having starting issues. I replaced the battery, starter solenoid and starter with no change!?!?!! When i hit the starter button it cranks super slow for a few seconds then all i hear is the solenoid clicking. I can start it with a battery charger on 10 amps and after its warm it will start back up almost every time!! Also getting over 12.4v when it runs, can you suggest anything else to try?
Steven says
If you can start it with the extra help of the battery charger then that tells me the battery is not good even if it’s new. The battery charger is supplying enough power to make up for the weak battery and that is why it’s starting. Also, if it’s only at 12.4 volts when running it tells me the rectifier or something in your charging system is not working. It should be hovering higher between 13.5 to 14.5 volts. Also, don’t forget to clean the connecting battery wires as they often develop corrosion over time. When you do get another battery make sure to charge it completely with a smart battery charger.
John says
Have a 2011 yamaha vxr. Started up once (no problem), let it ran for 15 seconds, started up twice (no problem), ran 15 seconds, then 3rd time it clicked and the green security light came on, it didn’t start. I let it rest for 30 minutes and it just the green security light came on.
Steven says
It’s wanting the code to unlock it or the key fob if you have one. To reset it you’ll need to take it to the dealership.
Laszlo Zold says
Hi Steven!
I have a 2004 Seadoo GTX 155 4tec 160hour.
When the engine is cold starts fine (on the trailer and also in the water).
After riding when the engine is warm it takes a lot of cranking to get it started.
Does my starter stop cranking (slow) after a few seconds (like it’s a feature to save the battery), then I have to press start again and go through this 3-4 times before it fires up. Once it starts it runs fine, and always starts right up when cold. Thank’s! Leslie
Steven says
This is a super odd one. It’s either fuel or a compression problem. This is one of the times I’ll say you need to take it in so someone can get their hands on it and figure it out. I’ve never run into this problem before.
Shaik Ashim Bakhas says
Hello Dear,
I have Yamaha Ex model Jetski. It unable to start, so after charging it got dry start. But in water it unable to start again. It happens twice the same. So I changed battery to 12v 18 amh (as 19 amh not available in market). Now engine not starting, only there’s tick sounds. Voltage showing greater than 12. What could be the reason please. Is there anything serious.
Steven says
Sounds like you need a new battery, the one you have has gone bad. Even if the battery charger says it charges fine it still sounds like you need a new battery.
Cory Hardy says
Ok, so my 91 Kawasaki TS has a very similar issue! When you go to start it and all it does it click, keep holding the start button. I did this for roughly 10 seconds and when i hit the starter button again, it actually turned the motor over. I know, weird….but try that and let me know how that goes.
Steven says
Sounds like you need either a new battery or a starter relay. If it’s multiple clicks you need a new battery, one single click then you need a new starter relay.
Jake says
Hey – 2006 STX 15F owner – bought it used and it ran great for 3 hours
3rd trip out it will crank hard but not start
Smart trickle charged the battery and it was at 13v
Check that fuel was geting to the rail
Engine cranks hard but never fires
ideas?
Steven says
Try replacing the spark plugs.
Jake says
Actually tinkered with the fuel rail some more – fuel pump may be bad
Adrian says
Hi Steven,
I read your article it’s great. Thank you for all of your advice here.
I made a post yesterday here; however, I’m not able to see it. That is why I am writing this post for the second time.
I bought the Seadoo Spark 2014 last year around August with a bit broken(cracked) hull that I fixed without any problems.
When I bought the jet ski I tried to turn on the engine; however, I was not able to start the engine and I thought that probably the battery is weak or I need to replace the spark plugs. ( I heard the sound that engine is trying to start)
Now when I have a bit more time I try to turn on the engine; however, I’m not able to and I don’t hear anything except one click.
I replaced the starter relay.
I replaced the starter solenoid
I’ve checked the battery and it is good( I’ve checked the battery for load in Auto Zone)
I’ve checked the starter (It’s working great)
I’ve also checked all of the cables from battery to starter solenoid and from the starter solenoid to the starter.
All of the fuses are good.
When I replaced the spark plugs I noticed that they are rusty, and that rust is on the top of the pistons. I wonder if it is possible that pistons got stuck?
What is your opinion on what can cause that engine this problem?
I didn’t winterize the engine because I have no idea that I should do this. I don’t know if this is important, but I live in a place where winter is warm and I parked Jet Ski in the garage all the time.
Could you please give me any suggestions on what I can check before I will go to the dealer?
Thank you!
Steven says
A hole in the bottom of the jet ski and rust in the cylinders is not a good thing. It sounds like the Spark sunk and the engine took on water and made it hydrolocked. This is not a good sign, I suggest taking it to the nearest repair shop.
Adrian says
The hull was broken outside the water. The engine is completely clean and looks like new and the hull inside looks like new is very clean. I don’t see any signs of water inside the hull, so I do believe that the damage was done outside the water.
Steven says
Something is not right as spark plugs should not rust. The person who sold you it could have cleaned it up. Something is not right and will need a repair shop to tear apart the engine to see what is going on.
Adrian says
Thank you very much for your advice
Bryan says
Hi Steven, great article! So…. here’s my situation… 1997 Seadoo GTI. Bought it a few weeks ago, all service performed by local mechanic. Local mechanic gave advice to crank it up out of water and warm it up prior to placing it in the water after I called him and advised him it wouldn’t crank in the water. I took his advice and it ran for a while; however, it just completely shut off on me a few times while riding as if I detached the cap key from the Seadoo. I checked the key but it was still attached. I held the start/stop button down for a moment several times without it doing anything and it finally cranked back up and made it back to the dock. Later, I checked to see if the Seadoo would crank while on the trailer and now there is no beep when I place the key on, the gas gauge turns on and the red light turns on quickly and both go off. During that quick moment I am pressing the start/ stop button but there is no clicking or anything in the engine. I checked ALL fuses, I checked the battery voltage and am good on that. I placed a screwdriver across the starter relay solenoid bolts without the key on the Seadoo and it sparked and sounded like it was going to crank. Starter Solenoid relay ? If it is the Starter Solenoid Relay would that also have an affect on the beeper? Thanks for your help!
Steven says
I’ve seen the start buttons on those models go bad or the key or DESS post. It sounds more like the DESS or Key is bad but a 23-year-old jet ski is bound to have a handful of problems so fixing the start button would be worth it too.
Bryan says
Thanks for your help! I will check it out and keep you updated on our findings.
Casey Callahan says
Hi Steven, we bought a 2005 seadoo Gtx 155 last summer. Had a blast at the lake all year. We got it winterized end of the season, and it’s been stored in the garage. We are taking it back to the lake next week. What do u recommend for maintenance each year? Should I go ahead and get the oil changed and new spark plugs each season before I take it out? And is winterizing at my dealer all I need to do at the end of each summer? Thanks!
Steven says
What I do is get my jet ski winterized with oil change every year, I only do this because things are cheaper in the winter and I don’t need it then. Then when the season starts I put some fresh gas in the tank and change the spark plugs. If you didn’t have the battery on charge during the winter I charge the battery or get a new one. If you didn’t change the oil in the winter I would go ahead and do it before you ride. An oil change once a year and new spark plugs every year is a must and if it gets below freezing where you live you need to winterize it every year too.
Casey Callahan says
Thank you. They winterized it, but did not change the oil, so I will do that now. Also we are going to get the solar charger you recommended because we did not put it on charge all winter. Hopefully it will not be dead for good. It was a new battery last year. The solar charger u recommend comes with a cigarette lighter plug… I assume u don’t use that? And just hook it up to the battery and hang the solar panel off? Also, heard conflicting things about getting it winterized. We filed the gas tank with new gas BEFORE winterizing it. When I too it to the dealer, he said I SHOULDNT have filled the tank, and instead left it pretty low.. your suggestion? Is my full tank going to need to be siphoned out now? 🙁
Steven says
You connect the 5-watt solar charger directly to the battery. These solar chargers often come with clips that you connect to the terminals of the battery. Leave the solar panel somewhere that the sun can get to it. If the battery is already dead the solar charger might not charge it up enough, it’s more to maintain the battery. You’ll need to get a 12-volt smart charger rated below 2 amps if the jet ski won’t start or the battery is weak. If the smart charger doesn’t charge the battery then you’ll need a new battery. I leave all my jet skis with 1/4 of gas for the winter, never fill it up and let it sit. Gas goes bad over time. Then when the season starts I fill the tank with fresh gas. If you stored the gas without STA-BIL in the tank the gas might not be good. The high-HP jet skis can get picky about their gas, if it’s slightly bad check engine lights go off. I would have the dealer check the gas and if it need be taken it out.
Casey Callahan says
Thanks for the quick replies! Ok, last questions.. if we store the seadoo in a garage all winter, it wouldn’t get any sun, so how often should we hook it up to the smart charger in the winter, and how long to leave it on each time? When they winterized it, they did put stabil in the gas, so perhaps it will be ok? Would stink to lose a whole tank of gas. And finally, is the starter relay an expensive fix? Ours may be going bad bc we have to push it a few times sometimes for the engine to fully turn over. We have noticed the DEES key has to be put on the post just right also.
Steven says
In your case, I would take the batteries out of the jet ski and put them somewhere off the ground in your garage. Then a few days before you get you jet skis ready for the season charge the batteries with a smart charger. If you got STA-BIL in the gas when it was winterized you should be fine. Replacing the starter relay can easy on some models and hard on others. From what you describe it sounds like you need a new starter relay. Just make sure the battery is disconnected and out of the jet ski before you replace it. This is for safety and often it’s so much easier to replace the starter relay with the battery out of the way.