2002 Seadoo GTX DI - Stalling

[cjpilot]

Well here is a question for all the guru's:

Took Ski out of storage after winterization, Had about 2 good hours in the water the first trip out... Did notice a bit of a hesitation at high RPM but came back and no more issues that day.

Took Ski out today:

-Idled out of docks no prob
-T.W.O stalled within a couple of minutes.
-restarted idles fine throttle opened..stall
-also notice that during the stall the gauges go dead... (rectifier?)
-was able to idle back in.
-NO warnings or horns when problems occurred

-I changed plugs but didnt help
-Brought home and ran a compression check... both at 90(low) but should still run right?
-I plan on doing a top end and cleaning the RAVE valves, Any other ideas as to what the problem might be?

One a side note, when I was looking things over, the three oil lines running from the oil pump to the rear of the motor were melted completely through near the mount on the front of the block and some oil apparently leaking on the side of the case. I havent pulled the exhaust yet and cant see where the lines attach.. does ANYONE know what the lines supply?

 

[sunbaby69]

oil lines go to crankcase to supply it with oil. 90 psi is way too low compression. top end shot...

 

[cjpilot]

Thanks for the response... after I had the whole top end apart and ready to go back together, was cleaning under case and noticed some rather large chunks of metal coming up... well now the motor is out with a BEAUTIFUL hole in the case thanks to a bearing failure on the counterbalance shaft. So if anyone knows where I can find a decent buy on a used 951DI case I would appreciate it. Needless to say, not to thrilled with Bombardier right now.

 

[magical]

try sbt for a replacement but i would say it was poor maintenance on your behalf as to why you blew engine coz if it had a full pre season service those oil lines wouldve been noticed and replaced so your crank and balance shaft wouldve been getting oil so its not bombardier's fault (plus its an 8 year old ski pipes and other things always need checked before each outing)

 

[cjpilot]

well I agree some good maint MIGHT have prevented it. I have no idea what would cause a bearing like that to fail other than a small amount of water in the case that caused it to sieze. The oil line doesnt actually feed the counterbalance bearing directly and the crank shaft bearing were in great shape amazingly. What caused the oil lines to melt was the counterbalance crankshaft end bearing destroying itself causing extreme heat as it bored away at my case. The oil lines pass right over the top of that bearing. I also have a brand new (2008)Can Am 450DS with less than 10 hours since new and a toasted fuel pump(lukily its under warranty)... call me crazy but I see some trend here. I raced motocross for over 20 years and never had these kind of problems with both 2 and 4 stroke motors. In fact I never siezed an engine or had to tear a bottom end down. I think my maintenance style is reflected in that. But appreciate the comment, I have already contacted SBT, but the shop I work with had to pull one of their "premium" engines out just after install due to defect in the motor. at this point I think I will try to find a case and overhaul myself with metal caged bearings, etc... live and learn I guess

 

[sunbaby69]

imagine that, another 951 with busted cases... try ebay for new set