Low fuel pressure. Help.
#1
Low fuel pressure. Help.
My '97 F-250 diesel is having a problem. Testing the fuel pressure at the schrader valve gives around 10 psi. I am not returning any fuel through the fuel pressure regulator. The low pressure makes me think that the pump is bad, but it isn't weeping. Does it sound like a pump to everyone else? I can pull fuel up from the tank with my mightyvac.
#6
It was the pump. I replaced it last night and the truck hasn't run this good in a long time. Nice to have some power back!!! I guess it was beginning to starve itself of fuel. The pressure now reads between 45 and 50 at idle. I haven't tried the shim yet, but I think I might this weekend. Thanks for your help.
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