I have had a new fuel pump installed. The system is a non return system with the fuel pressure regulator in the fuel tank. The truck does not start immediately after being shut off for a few minutes. It starts and runs but the gas mileage has dropped by over twenty percent. Cannot seem to get rail fuel pressure over 50 psi. Specs indicate I need 56 PSI minimum. Does the fuel pressure damper have anything to do with this?
Prior to replacing the fuel pump (required due to pump failure) the engine ran fine with consistent 15 to 17 mpg depending on type of driving. Have been trying everything I can think of or google. Any ideas?
have the same problem?
Monday, August 8th, 2016 AT 6:03 AM