My 15 hp Mercury 2 stroke is having issues.
The engine starts fine and idles fine
It runs WOT fine as well
The problem is air is bubbling up from the fuel inlet on the carburetor.
It also shakes frequently when going slow from the boat to the dock.
I have rebuilt the carburetor with new pump diaphragm and gaskets a coupttimes. It did start to run better after doing this, but the air and shaking problem still exists. I believe the shaking is caused by the air being generated inside the carburetor band mixing with the fuel causing the engine to shake. The air then bubbles up from the fuel inlet and fills the fuel line with air. There is no gad leaking out anywhere.
Any idea where this air is coming from?
The engine starts fine and idles fine
It runs WOT fine as well
The problem is air is bubbling up from the fuel inlet on the carburetor.
It also shakes frequently when going slow from the boat to the dock.
I have rebuilt the carburetor with new pump diaphragm and gaskets a coupttimes. It did start to run better after doing this, but the air and shaking problem still exists. I believe the shaking is caused by the air being generated inside the carburetor band mixing with the fuel causing the engine to shake. The air then bubbles up from the fuel inlet and fills the fuel line with air. There is no gad leaking out anywhere.
Any idea where this air is coming from?