bayliner jazz 90 hp force cavettating

garry2808

Recruit
Joined
Aug 12, 2018
Messages
1
90 hp sport jet seems to be caveatting when i take out the bilge plug and run motor in driveway exhaust comes out of drain into bilge. bilge drains into water intake so if exhaust is getting in there would that cause the caveatting.
 

Redbarron%%

Chief Petty Officer
Joined
Dec 7, 2017
Messages
479
I am not sure what you are talking about, but the exhaust is on the top side of the ride plate and if it leaks the exhaust will be drawn into the pump inlet and the pump will cavitate.
The ride plate must be sealed to the bottom of the hull. The cooling water is also dumped from the engine and exhaust into the box under the engine ans out the two plates with holes into the space between the box the engine and pump sits on/in.
So there is exhaust and spent cooling water in the space around the inlet over the ride plate.
 
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