2002 GTX 155 lacks power

[farauscher]

Newbie to seadoos and forum. Just bought ski with 100 hours, so now I'm working out some problems. Ski ran well for first day but felt a little slow. Engine had plenty of power, figured wear ring needed to be done. Second day, lost power. Would only come up to 6200rpm and the idle became rough, coming down to 1300-1400rpm. Third day, replace wear ring and plugs. Btw, old plugs looked good and even. Jumps on plane now, but will only come up to 5400rpm. Will hit that at 1/2-3/4 throtlle. More throttle gives no more power. Idle stiil rough and will stall. Any ideas of next steps? Thanks in advance.

 

[KK40384]

Remove the white learner's key and replace it with the yellow key and let us know how it does. Of course if have already done so then there's another problem. Are you getting any lights or alarms going off. If you have a check engine light on press the set button 5 times and it will display the error code on the LCD display. Write the number down and report back.

 

[farauscher]

It's not the learner key...no codes, already checked that. Any other suggestions? Thanks.

 

[farauscher]

Did a compression test today and all three cylinders were 180-190psi. On a cold start, she seems to start strong, then after a 30 seconds, starts to miss at an idle. I'm thinking a coil or injector. Any recommendations to check either? Anything to focus on? Thanks