Removed head to see pistons - thoughts

[USCG96gsx]

I had a long drawn out topic going and just wanted some feedback on my 96 gsx.

Little back ground, couldn't get it to turn over. Pulled the pump and it's free, replaced all the grounds and connections. Starter is next but that thing is buried. Plus I have fat hands...Seadoo engineers must have long skinny arms!

 

[dean.mohr]

I'm no pro, but those look pretty good to me. On anything with some hours, I'd expect some carbon on the pistons. From your pictures, I don't see any scoring on the walls, so that's a plus.

Are you able to turn the engine over by hand? Does it click at all when you try to start it, or is there no life at all?

 

[USCG96gsx]

It is locked up. Pulled the pump and the starter and still locked up.

 

[dean.mohr]

Can you give a little more background? When did it last run (if you know)?

My only experience with something like this was actually rebuilding a 717 motor that the rings has rusted to the cylinder walls. Our way of fixing it was a chain vice on the driveshaft to force the pistons to break free. Unfortunately, this destroyed both pistons/rings and we weren't able to hone the cylinders clean enough to re-use without stepping up 0.5mm in bore.

The head in the lower does look like something may have bounced around in there (all the little nicks and chips). Though that wouldn't have a direct impact on it locking up.

 

[USCG96gsx]

Late last summer the vts boot failed on me, when I stopped to eat lunch half the hull filled with water. Got it out of the lake, drained, pulled the plugs and fogged it out. Then ran it for what I thought was long enough to burn that water out. Well fast-forward to may and it's locked up.