I am seeking your advice before I dig into my newly acquired winter project.
Today I bought a 2001 Seadoo GTX DI 947cc Direct Injection Seadoo from it's original owner. I bought it cheap after it lost compression.
The previous owner described that it never really ran right this year. He assumed dirty fuel injectors and ran injector cleaner in the tank. It died on the water and would not re-start. The Bombardier dealer told him they don't work on 2 strokes anymore and advised that the compression was 50 and 100. The owner advised me he checked it himself and found 75 and 75. The Seadoo's info gauge says 172 hours. The previous owner says it's all original except for a racing intake and impeller?
I towed it home and it will start but not run. I read 35 and 60 psi for compression but my gauge is known to read low. I can feel weak compression by using my thumb on the spark plug holes. The front cylinder is clearly the weaker of the two. So I'm thinking I'll buy a complete top end kit and have a machine shop bore the cylinders over for me.
It looks to me like I can do the top end inside the seadoo (but is it better to just get it out for convenience?)
It looks to me like I may need to buy a wrist pin tool but there is a method for installing with the plastic holder in the kit?
There is discussion about three choices for gasket thickness but I'd assume I can just buy the same one that came out?
There is discussion about volumetric measurement of the combustion chamber but no adjustment procedure (skip that step?)
Is any rebuild kit as good as the next?
Anything to do or check before I open it up and get started?
I have never done a top end but I am a very competent backyard mechanic with extensive experience and it's time I learned how.
I've looked in my 1998 (non-Direct Injection) shop manual and it doesn't look too hard.
Thanks for taking the time to share your knowledge with a newbie!
Jeff
Today I bought a 2001 Seadoo GTX DI 947cc Direct Injection Seadoo from it's original owner. I bought it cheap after it lost compression.
The previous owner described that it never really ran right this year. He assumed dirty fuel injectors and ran injector cleaner in the tank. It died on the water and would not re-start. The Bombardier dealer told him they don't work on 2 strokes anymore and advised that the compression was 50 and 100. The owner advised me he checked it himself and found 75 and 75. The Seadoo's info gauge says 172 hours. The previous owner says it's all original except for a racing intake and impeller?
I towed it home and it will start but not run. I read 35 and 60 psi for compression but my gauge is known to read low. I can feel weak compression by using my thumb on the spark plug holes. The front cylinder is clearly the weaker of the two. So I'm thinking I'll buy a complete top end kit and have a machine shop bore the cylinders over for me.
It looks to me like I can do the top end inside the seadoo (but is it better to just get it out for convenience?)
It looks to me like I may need to buy a wrist pin tool but there is a method for installing with the plastic holder in the kit?
There is discussion about three choices for gasket thickness but I'd assume I can just buy the same one that came out?
There is discussion about volumetric measurement of the combustion chamber but no adjustment procedure (skip that step?)
Is any rebuild kit as good as the next?
Anything to do or check before I open it up and get started?
I have never done a top end but I am a very competent backyard mechanic with extensive experience and it's time I learned how.
I've looked in my 1998 (non-Direct Injection) shop manual and it doesn't look too hard.
Thanks for taking the time to share your knowledge with a newbie!
Jeff