NoPistons -Mazda Rx7 & Rx8 Rotary Forum - Fuel pump only works with F/P & GND jumper

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rowdog_14

09-17-2017 09:34 PM

Fuel pump only works with F/P & GND jumper

I purchased an FD yesterday and the guy said he replaced the fuel pump. The car seem to work fine until I ran it up to about 4500 one time going up a hill and it stumbled.

I can not hear the pump run with the ignition set to ON. I can only hear the pump with a jumper on the F/P & GND.

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