Corolla Wagon L4-107.5 1762cc 1.8L DOHC (7A-FE) (1993)
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Fuel Pressure Regulator: Description and Operation
Fuel Pressure Regulator
PURPOSE
The fuel pressure regulator maintains fuel rail pressure at 31 - 37 psi (206 - 255 kPa) above manifold pressure.
LOCATION
Mounted on the fuel rail.
OPERATION
Manifold pressure is delivered to the regulator through a vacuum line. As the vacuum drops under load, fuel pressure is increased to compensate
for the additional fuel demands.
