D21 Hardbody 4WD V6-2960cc 3.0L SOHC MFI (VG30E) (1991)
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Fuel Pressure Regulator: Description and Operation
Fuel Pressure Regulator
PURPOSE
Maintains the fuel pressure at 299.1 kPa (3.05 kg/cm2, 43.4 psi) above engine vacuum.
LOCATION
Part of the fuel rail.
OPERATION
It utilizes vacuum acting upon a diaphragm to control the amount of fuel pressure allowed to the injectors.
