Is it possible that there can be a bad gasket in the crankcase halves that is allowing the fuel to be pulled down and drawn into the bottom cylinder? I stated before I can visually see fuel being drawn into the top carburetor from the Venturi. Also it seems as if the pulse is not working to operate the fuel pump so I have to do it by hand via the bulb
The fuel pump I purchased was new but it had the vent hole in the back so I plugged it off with a screw.

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