1995 Seadoo GTS runs well on trailer but stalls out in water

[Big Joe]

I just got a 1995 GTS with white 587 engine. I replaced the gas and gas lines on the jet ski. It will run fine with a garden hose hook-up. I put in water past weekend ran fine at low speed (NO Wake Zone) but as soon you in the throttle she cut off. I put back on the trailer with the garden hose hook-up she will run fine at all rpm.

 

[LouDoo]

Hi, and welcome to the forum.

Could be a fuel delivery problem. Fuel selector valve, main fuel filter, carb. fuel filters. However the first thing I would check it the compression. Check the compression and let us know what it is and we'll go from there.

Lou