At 11:28 AM 7/1/2007, Mark wrote: >My Daughter bought a 95 SeaDoo Jet Ski with a 580 Rotax engine. It >runs but seems to run out of grunt and misses at high RPM under >load. We have checked compression and it measures 150psi in both cylinders. Maybe the nos bottle is empty? http://video.google.com/videoplay?docid=-7591721914572490711 -Wayne