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Results for fuel pressure, fuel pressure regulator
  • Forum Reply: Re: 1999 F350 Fuel System Problems

    1999 F350 Fuel System 6.8L The fuel pressure should be between 28-45 psi with the engine running. Fuel pressure should hold when the vehicle is off. If the pressure bleeds off, that is usually a faulty fuel pressure regulator. The fuel pressure regulator should be located on the fuel rail,...