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**wtyamamoto** · 05-09-2005, 01:37 PM

Re: Kawasaki 12f problems

Could it possibly by a faulty cooling system? Either a blockage thats letting it get too hot, or a sensor having a spike in it's curve so when the engine gets to given temp, it sends a faulty signal to the system saying it's hotter than it really is?

**stevekay22** · 05-09-2005, 01:59 PM

Re: Kawasaki 12f problems

I have checked for blockage. None! When I stop it is for less than 10-15 seconds. Just enough time for a few cuss words, but somthing as you said is resetting itself. Would the computer show this if it is hooked up to the ski? I get no warning lights of overheating. Water is coming out of the side as it is supposed to. Thanks for your quick response! What else?

**wtyamamoto** · 05-09-2005, 02:09 PM

Re: Kawasaki 12f problems

Not sure how the electronics in your year is (how "computerized"). If it's automated enough, the brains (ecu) may be seeing SOME kind of rise in the temp. Temperature sensors are usually positive or negative (either resistance goes up with higher temp or it goes down with higher temp). Temp sensors can go faulty and give a bad reading only in a range of temps. I do not know what the resistance scale is for it is. Maybe someone on this board might know.

Have you also checked the one-way valve in your fuel line? It may be faulty and causing a problem only after so much fuel has been sucked out of the tank and creating a vacuum in the tank that the pumps can't fight against...just another thought...

**stevekay22** · 05-09-2005, 02:27 PM

Re: Kawasaki 12f problems

Thanks! I will check it out and wait on other posts! Anyone with updates??

**wtyamamoto** · 05-10-2005, 08:53 AM

Re: Kawasaki 12f problems

Just a clarification of my previous post since I thought about it last night and didn't call the part by it's correct name. It's the Check-Valve that's connected to the vent line from the fuel tank.

It should let air into the tank as the fuel pump pulls fuel out, but keeps gas from spilling out if the craft should roll. You take it out and blow through it. If it blows both ways, that's bad because fuel will spill out if you roll. If it's stuck both ways, that's bad cuz as you run the ski and the carbs pull fuel, no air can get into the tank to compensate. At a certain point, there's enough of a vacuum in the tank that it fights against the fuel pump trying to pull fuel out.

Happened to a friends ski and at first we thought it was a carb problem.

**Phil STX15F** · 05-10-2005, 09:33 AM

Re: Kawasaki 12f problems

Try changing your fuel filter.

**wtyamamoto** · 05-10-2005, 03:47 PM

Re: Kawasaki 12f problems

That's possible too. He said it was in the shop 7 times, so I just figured that they would have tried that as a basic (though the check-valve is a basic check too...)

**FastUltra** · 05-10-2005, 09:02 PM

Re: Kawasaki 12f problems

without knowing ever detail its very hard to say something about the symptoms you are havin, due to the complexety of the craft. Is there any other dealer around you can take it to. If they have had it 7 times and haven't fixed it, then its not your fault, or the boats fault its a dumb tech.

But it does sound like fuel starvation. So filter and check valve is where I would start. Also check all ignition wire connections. How old are the spark plugs? Has your dealer been charging you for the service? You may want to for $25 buy a service manual from Kawi.

**stevekay22** · 05-11-2005, 10:37 AM

Re: Kawasaki 12f problems

Thanks for all the input. I will change the fuel filter and the check the fuel valve. The plugs and wires are fine. There are only 32 hours on this ski so it must be the fuel starvation issue. THANKS EVEYONE FOR YOUR HELP!! I WILL KNOW AND POST THE OUTCOME IN A FEW DAYS!!

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Kawasaki 12f problems

Kawasaki 12f problems

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