Search: Lbz Fuel Pressure Regulator Symptoms. In general, there are 10 possible symptoms of a fuel pressure regulator that is in bad condition On a dmax, if you run high inlet pressure, you will have some strange things happen A couple of times I've had to prime my fuel filter even when the truck was in the heated garage and wouldn't start after sitting overnight This didn't fix either of my. If out of range replace the rail pressure sensor. (0 PSI LBZ) 5) Check fuel return from the high pressure limit valve or fuel pressure relief valve. If it is leaking then it will need to be replaced. We have also heard of race plugs leaking, even if you have a race plug, you may want to check for leakage at max rail pressure. 2006 LBZ Daily Driver, Tractor, School Bus, Hot Rod Diesel , Crew Cab, Lifted, Hunting Rig , Cowboy Cadillac ... From the supply at the tank remove the OE hose and use a suitbable plug the cap the quick connect. Run the supplied hose from the tank to the AIR DOG cutting line to correct length and connecting both ends with supplied barbed. Eric shows a helpful tip when installing a Fuel Pressure Regulator By reading manifold pressure or vacuum, the regulator will keep the fuel pressure constant regardless of how much fuel is being drawn from the pressurized system A true return-style fuel system places the regulator after the fuel rails oe cross-reference: 2c3z-9c968ab f81z. Chevy/GM / Duramax 6.6L 06-07 LBZ / Fuel System CHEVY/GM | DURAMAX 6.6L 06-07 LBZ | FUEL SYSTEM. BD Diesel is your number one manufacture of aftermarket and replacement products for Chevy/GM Duramax powered vehicles. ... These Fuel Plugs seal in 30,000 psi rail pressure and improves engine starting.... $52.95 CAD. ADD TO CART. Quick View. PART.