What is the fuel pressure for a 5.4 L ford expedition engine

70

Asked by Aug 27, 2015 at 01:47 PM about the 2008 Ford Expedition Eddie Bauer 4WD

Question type: Maintenance & Repair

I have a 2008 Ford Expedition and I am having problems with the engine after changing the spark plugs and fuel filter, I think the fuel pressure is too high, 60 before start and above 70 engine running. Is this normal? I can smell gas on the exhaust now. No check engine and verified the spark plugs twice.

3 Answers

143,385

Yes, that is high. Might need a fuel pressure regulator, or Ford calls them modulators. Specs for the 5.4 are 35 psi +/- 5

5 out of 5 people think this is helpful.
70

Do you know where is the fuel pressure regulator located on the truck?

7 out of 7 people think this is helpful.
4,495

35 psi +/-. You are way too high.

4 out of 4 people think this is helpful.

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