bengarber

I just bought two F-12x PWCs (2002 and 2004 with 40 hours on each, very well maintained) so I am still learning alot about them. Right now, I am having a problem with the 2002 model and it leaking fuel. The first symptom was it started running rough, so I have been reading the forum and have done a few things to try to address the issue. When I was ready to go out and try it out after I replaced the plugs, I noticed fuel in the boat. I thought I might have spilled some when I fueled it but I noticed there was a LOT of fuel. I drained it out and opened all of the compartments. I ran it on the flush with everything open to try to find the leak. The fuel rail, hoses and fuel pump did not appear to be leaking at all. I noticed fuel coming from under the tank, so I thought it might be a hole in the tank.

I unhooked everything on tank and tried to remove it from the front compartment. I could not get the tank out so I assume that it cannot be removed without taking the engine out?? However, I lifte the tank and turned it on its side with fuel in it and could not find any leaks. I am trying to figure out where the fuel was coming from. Now that it has sat for a while, there is no fuel leaking so now I am assuming it was coming from around the fuel pump or somewhere I could not see .. but when I saw the fuel leaking .. it was coming from under the thank in the center of the hull.

Any ideas or suggestions? Does the tank come out? Should i change the fuel pump?

Thanks!

98yota

Some of those tanks are really wedged in there! I would take off as little as possible and try to get the tank out and inspect. Leaking fuel is very dangerous and the leak needs to be solved. There might be a split in the seam of the tank. Sometimes the seams are weak from the factory and split over time.

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1993 Yamaha WaveBlaster 701
1989 Yamaha WaveJammer 500

glockm22

Very Unusual, this could be a hard one to find. Make sure all your hoses are good and tight, check the fill neck. Once you up the key in the fuel system will pressure up for you and without starting the ski you should be able to search for leaks in the fuel system, if none are found their you will have to inspect the tank very very well. You can't take a change with fuel leaking into the body of the ski, last year had a couple of kids almost kill themselves when their ski blew up, after was funny seeing them fly in the air but at the time I thought they were dead! Leaking fuel is nothing to mess with! Good Luck

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