Seadoo GSX engine problems

[racerxxx]

Mik hit it on the head. He also hit it a number of posts back as well, never take someone's word for work done. When was the invoice for they fuel system work? If that was a year ago and the ski sat for that long you can't trust it. Time for a rebuild unfortunately.

 

[teddytuffnut]

so I'm guessing the damaged rave valve cant be salvaged?? the cylinders don't look that bad, to be honest, I haven't measured them but there is no noticeable damage I'm hoping I can just go one size up on the pistons....

 

[teddytuffnut]

Mik hit it on the head. He also hit it a number of posts back as well, never take someone's word for work done. When was the invoice for they fuel system work? If that was a year ago and the ski sat for that long you can't trust it. Time for a rebuild unfortunately.

so the invoice was September 2015 the work was done by the Seadoo dealer here in sydney going off the invoice it had 2 genuine Mikuni kits put in,new fuel lines and fuel filter and check valve was replaced. Compression test carried out which was back then 145 psi on both cylinders.

 

[teddytuffnut]

Anyways I've just ordered a reman crank from Seadoo so im definitely committed to this project now.... As for the top end and the damaged rave valve is it best to replace both of them...??

 

[racerxxx]

I'd inspect the raves and if any doubt replace them. You still should go thru the carbs.

 

[teddytuffnut]

Yes I will be going through the carbs as well. In regards to the RV shaft, I have pulled it today and inspected it all looks okay the wear on the brass gear looks even all the way around here is a few pics of it... In regards to maintenance, the bearings feel good and it all looks okay however while I have it apart is it worth putting on new seals and bearings ??

 

[racerxxx]

Looks good. I've replace many of the bearings and they've all been perfect when I pulled them. Probably not worth it.

 

[mikidymac]

IF you don't replace the bearings at least replace the seal and o-ring.
I would completely rebuild the balancer shaft.