90 HP Inboard mercury jet

[wvblazer]

Took the boat out for the first time ran great for about an hour. After that seemed to loose power but rpm remained constant most of the time but did shut down after that. Was getting no power from the jet at high rpm but nothing sucked up in it. New to these types of boats any ideas woule be greatly apreciated.

 

[Zamboni]

Re: 90 HP Inboard mercury jet

If its revving up but no power its something at the pump...probably the ride plate gasket or some debris got into the impellor and gouged wear ring. Double check there is nothing lodged behind impellor causing cavitation...mine came with a clam.