How do you ajust fuel rail/system pressure

Asked by Dec 25, 2015 at 03:47 PM about the 2008 Ford F-350 Super Duty XLT Super Cab 4WD

Question type: Maintenance & Repair

Code scan is P0088 / fuel rail/ system pressure -
too high

1 Answer

71,025

You don't. Sounds like the fuel pressure regulator is bad. Or the return line to the gas tank from the fuel rail is blocked. Check the vacuum hose going to the fuel pressure regulator as well, if equipped. HTH. - Jim

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