Home › Forum › Ask A Member › Shaking at High RPM Running 1955 Evinrude Fleetwin Aquasonic 7.5HP › Reply To: Shaking at High RPM Running 1955 Evinrude Fleetwin Aquasonic 7.5HP
I pulled everything apart and back together again many times.The water tube appears to be aligned. I have not done a compression test on this power head. I first started experiencing problems with the water pump when i had to take out the bottom drive shaft. I used permatex water pump and thermostat housing gasket maker to seal the pump and gasket afterwards. The motor seems to only want to pump water when its submerged 2 or 3″ below exhaust port.When i hit the throttle and the motor comes out of the water and you can see the beveled edge of the skeg it stops pumping. Even though the holes for water intake are still submerged.At this point im thinking of installing a new water impeller.