I am experiencing low fuel pressure. The pressure is about 52 psi with the key on and the engine not running. The pressure is around 50 psi. With the engine running. The spec calls for 60 - 65 psi. Also, the pressure holds when the truck is turned off.
I have changed the pressure regulator, the fuel filter and the fuel pump (Delphi - complete assy.)
What else could be contributing to the low pressure.
have the same problem?
Saturday, February 12th, 2011 AT 11:03 PM