Just replaced fuel pumps in both tanks in a 1993 f -150 and it still is loosing fuel pressure. It takes a while for it to crank it. But once it cranks it runs good. What the crap is wrong?

Fay Bowden

Asked by Aug 19, 2015 at 08:58 AM about the 1993 Ford F-150

Question type: Maintenance & Repair

4 Answers


Fuel pressure regulator, leaking injectors, crud in the fuel lines.

Fay Bowden

We replaced the regulator also. My husband and son are thinking the fuel line between the front tank and going to the motor.


Does it have dual fuel tanks? If so check the switching valve, it may not be switching properly and venting pressure back into the return system.

Fay Bowden

Yes sir it has 2 fuel tanks

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