[72c20customcamper]

In my opinion vapor lock doesn’t happen prior to the pump (unless it real close to the exhaust)it happens the line that goes from the pump to the carb or the carb itself . Even when gas was good we would insulate the line running close the motor with foam foil tape and installed plates under the carb , people used wood spacers sometimes .

I’ve heard of people using a small electric pump to overcome vapor lock but you would be better off moving the inlet line away from the motor . Only safe way to use an electric pump is to have an oil switch and inertia cutoff .