rxp cylinder compression

[buddydoo]

OK,having lack of power and loss on top end with my wifes rxp,so had the SC clutch rebuilt with metal washer and seen know differents in top end but just a little on out the hole.So,I did a compression test on it and the front cylinder was 148 p.s.i.,middle was 130 p.s.i.,and the back was 130 p.s.i..Has anybody see this much of a differents in pressure between each cylinder.I know it's not good.

[mxl16]

i think you want them all to be fairly identical...checked mine 2 weeks ago..130, 100, 130 what a piece of shit (mine).

[buddydoo]

Dam,that sux,I just gave it a nother try with a shot of seadoo lude in each clyinder,150 p.s.i. in front,140 p.s.i. in middle,and 140 p.s.i. in back,a little better.

[Top banana]

should be around 135 -140

[11]

If your motor is stock then the 148 comes from using a POS gauge.

Now no matter how accurate the POS gauge is, 148/130/130 is bad news.

[buddydoo]

Thanks,I'm thanking that the oil being over filled by the dealer on my last service may have cause this problem.I have jerry's eye witness on that screw up from dealer.

[ramnj]

....I just gave it another try with a shot of seadoo lude in each clyinder...

No need to do that.

[jawz]

Check valves and seats/springs

[CRS]

Your engine needs to be warmed up fully and your throttle wide open when you do your compression checks.This can have quite an effect on your readings.

[buddydoo]

Thanks CRS,I will give it a run today and check cylinder p.s.i. after riding.