I have a 2001 Seadoo Challenger 2000 with v-6, M-2 engine. When you first start the motor it runs real rough it will surge and stalls. When the motor gets up to running temp runs fine until you idle back to a no wake zone, then will surge and the stall. It almost acts like the fuel injector is not giving enough fuel to fire. This all happening at 1600-2000 RPM's and when the engine is cool. Once the motor gets up to running temp it runs better at idle but still is not 100% as it wants to stall but not as much when its cool. I put new plugs in the year, didn't help much. Runs fine above 2000 rpm. Been running 93 octane and added sea foam additive. I also changed the senser on the block last year that works with the engine temp as would a choke. The motor does seem to load up at slow speeds such as no wake zones, lots of blue smoke when you take off then runs clean.
Any advise or suggestions?
Bill
Any advise or suggestions?Bill
