200 Quattro Wagon L5-2226cc 2.22L SOHC Turbo (MC) (1989)
Fuel Pressure Regulator: Description and Operation
Integral Fuel Pressure Regulator W/Push-Up Valve
Pressure Regulator W/Push-Up Valve
The primary fuel pressure regulator for the turbo models is built into the fuel distributor housing. It regulates the pressure to the control plunger
(metering side) and differential pressure valves (inlet side) in the fuel distributor. It also acts as a check valve to retain pressure in the system when the
engine is shut off.