Fuel Pressure Regulator

Fuel Pressure Regulator





The fuel pressure regulator is a diaphragm-operated relief valve mounted on the fuel rail with fuel pump pressure on one side and manifold pressure on the other side. The fuel pressure regulator maintains the fuel pressure available to the injector at three times barometric pressure adjusted for engine load. It may be serviced separately.

For information on diagnosing fuel pressure conditions, refer to Fuel System Diagnosis.
Fuel Delivery and Air Induction