Danielle Posted January 15, 2021 Report Share Posted January 15, 2021 Anyone know how to test the pump.. while it's out? Also I got it leaning to one side.. the cupping side.. no fuel coming out.. however lean it to the other side and fuel drips out the nip Quote Link to comment Share on other sites More sharing options...
desoto1939 Posted January 15, 2021 Report Share Posted January 15, 2021 if the FP is out of the car then put a finger over the intake side and also th eoutput side then move the lever to make the diaphragm move. to this several time. It should then build up pressure and when you remove you finger from the ouput side you will hear air and hear the air coming out of the FP. If you do not get any suction then the rubber diaphragm is probably ripped or has a hole in it. You can rebuild these pumps with an ethanol fuel pump rebuilt kit .or get a brand new one and install it back into the engine block. I always perform the same testing setup to make sure that the unit has a draw for pressure. Rich Hartung Desoto1939@aol.com Quote Link to comment Share on other sites More sharing options...
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