Fuel Pressure Regulator

Fuel Pressure Regulator Assembly:

The fuel pressure regulator is a diaphragm-operated relief valve with fuel pump pressure on one side and manifold pressure on the other. The function of the fuel pressure regulator is to maintain the fuel pressure available to the fuel Injectors at 3 times barometric pressure, adjusted for engine load.

The fuel pressure regulator attaches to the fuel rail on the fuel return side and may be serviced separately.

If the fuel pressure is too low, poor performance could result.If the pressure is to high, excessive odor and a Diagnostic Trouble Code (DTC) may result.