Cindy bought herself a 1990 Kawa 650 tandem jetski. We took it with us for a week on Lake Eildon over the holidays. Fantastic fun !!!, however it seems to have a problem after about an hours use. You'll come to a stop and the engine just shuts down dead. You go to start it .. fine, add some throttle .. dies. It almost feels like a HUGE vacuum leak. Checked the lines, manifold bolts etc looked ok. Began to think coil perhaps getting hot and shutting down, or even fuel vaporisation?? But it also did the same one morning on first start for the day. Then once running it's fine for about an hour. Damn stumped on this one, and being a 2-stroke, I know very little on them. Can anyone shed some advice, or does anyone know of any common problems associated with these jetskis??? BOB?? Thanks in Advance guys!