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95 seadoo xp compression test. Needs rings? or head gasket?
- Thread starter Beebe
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I would pull the heads and look inside. The cylinders could be scored.
Karl
Karl
it is the piston. they never lose that much compression without destroying the piston. the head gasket is an O-ring that never blows. you probably damaged the inside of the head where all the chunks of piston got mashed into the head. rings cost $50 and piston with rings costs $70. the cyl walls may be ok.
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You don't have to remove the engine but it will give you lots more room to work on it.
Karl
Karl
once you have down to where you can work on the cyls, you are about a half hour's work from having it on the bench. first time you do a piston, you want to see what you are doing. the motor mount isn't loose, it is broken. replace 1 mount at a time, so you don't mix up the shims. don't lose any shims. don't remove the broken mount base until you have replacement ones.
ok heres the update... the back piston has many small holes around the outside of the piston. the cylinder is scored not too badly but i will replace. the connecting arm has some movement on the back, but the front is pretty tight. The engine mount bolt just keeps turning, so i will have to take the motor out. Any other ideas, feel free to give them to me. Thanks for all the other advice.
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timmyboy76
New Member
that cylinder being scored,...can possibly get away with honed job(doin right, do both cylinders)...
A loose connecting rod is not good!
It sounds like you might have a bad connecting rod bearing. I would pull the engine and check out the extra play.
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Karl
It sounds like you might have a bad connecting rod bearing. I would pull the engine and check out the extra play.
Do you have a seadoo shop manual? If not here’s an idea for you. You could join as a "premium member". As a premium member you can down load a authentic seadoo manual from the seadoo manual library. In the library is a variety of manuals for almost all years and models. You can view as many as you like on line as a PDF file, or download it and print it for your personal and private use. There are operator manuals and repair manuals for you to do your own repairs on your seadoo. The repair manuals have everything from troubleshooting, repair procedures to winterizing. It contains wire diagrams torque specs and pictures for disassemble and assemble instructions. In the spec sheets it tells everything needed to maintain oil changes, spark plug gaps, carburetor rebuilds and impeller wear ring tolerances. Click on the "Seadoo Manuals" link at the top of the page for more details. If you need any help or get in a jam, we are always here to answer your questions too. Premium members get priority when it comes to getting quick detailed answers.
Karl
That's a good thing...you'd be lost if you didn't and it seems to be the best deal around, here on the seadoo forum. I bought one from my seadoo dealer for my 2008 speedster, because the forum didn't have one at the time....cost me $85.00!
Karl
Karl
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