1996 speedster twin rotax possible cavitation?

[thinxman]

Hello, new to the seadoo boat world.

question 1:This problem does not happen all the time. Cruising at 4500 RPMs then move throttles to go faster, the RPMs increase to 6000 and boat speed does not increase? The first time this happened I changed the plugs did not happen again. This weekend it happened a couple times. I can get the boat going 45 mph with 2 adults and 2 kids.

question 2: cruising at 45 mph still have throttle available, move throttle to full and boat stays at the same speed and the RPMs do not increase?

Any info on these 2 questions would be great as we love this little boat.

Thank you,

Tommy

 

[LouDoo]

Both questions sound like cavitation. If the throttle settings are the same for both engines both wear rings probably need replacing.

Lou