Fuel Pressure Regulator: Description and Operation

Pressure Regulator:

The pressure regulator is a diaphragm-operated valve that regulates fuel-rail pressure at 3.0 bar above the intake manifold pressure. Excess fuel is directed back to the fuel tank via a return line.

A pipe connects the throttle induction elbow to the pressure regulator to provide the vacuum control signal.

The regulator is fitted between the rear end of the right-hand fuel rail (bank 1) and the fuel return line to the tank.