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Old 06-21-2009, 07:34 PM   #1
Scooby Newbie
Member#: 195367
Join Date: Nov 2008
Forester Fuel pressure problem, need some advice.

Hi Guys,
My fuel pressure is sitting at about 48psi at idle, which is too high. I know that the 0vac 0boost pressure is 43.5psi and that idle should be about 35psi (21 in hg = 8.8psi).

I am taking the measurement on the engine side of the fuel filter.

The fuel regulator has been swapped with no change and I have disconnected the fuel line before the pressure damper to see it was a return line blockage.

I have also tested the fuel regulator by cycling the pump without starting the car, and the pressure sits at about 45 psi.

The only fuel system mod I have is a walbro pump, but since the problem isn't low pressure I have ruled out a pump problem.

what else can I do / should I check? Are there any problems with my methodology so far?
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Last edited by canjee; 06-21-2009 at 07:48 PM. Reason: Added regulator check
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