Back in the old days, a carbureted automobile had a diaphragm in the gas feed called a vacuum pump. It’s function was to hold gas up in the line to the carb so it didn’t take forever to start the car. You could tell when that little rubber diaphragm went bad by pulling the throttle link and being able to see gas go into the carb.
Does anyone know if an Onan 4000 has such a critter? I think not. Ace, Duck, Bob?
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