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International Automotive Technicians Network
Re: FORD GAS SUPER DUTY FUEL PUMP BLEEDING OFF
Posted to Technical Discussion Forum on 8/2/2023

Modify your fuel pressure tester to accommodate a shut-off valve or buy a tester with one built in. The shutoff should be before the gauge obviously.

Prime system, turn valve and observe gauge to see if it drops with injectors isolated.

It's either pump or... Login to read more.