Re: Dual Action Fuel Pump Diagram

Posted by Robert Freeman On 2013/5/26 18:27:19

I checked for suction and discharge and couldn't tell if the new fuel pump from MM had either. The car runs on the electric fuel pump only, the mechanical pump doesn't seem to be working. When I switch the electric fuel pump off, the carb soon runs out of fuel and the engine dies.

My car came to me with a huge Carter dual action fuel pump that was leaking fuel. It had an eccentric on the pump arm that slid a little on the arm. I was told (by MM) that the Carter pump was for a 1953 model Packard, not my 1950 model. The pump arm on the new pump has a plastic pad at the end and it's arm is a little shorter in length, but the pad lined up pretty well with the eccentric of the Carter pump when put side by side. Why do you think the new pump is not working?