I am putting compressed air in the spark plug hole.
The engine is running is a barrel full of water, above the impeller & water inlet
When engine is running I can feel air coming out "pee" hole (only ran it for short time)
What Plastic washer???
Mercury Kiekhaefer 60 not pumping water
Replaced impeller
flushed water passages & outlet
When I put compressed air in cylinders I can hear & feel a very small amount of air coming out water port on top of engine.
That engine design does not have cylinder head gasket that seals cylinders from...
