Fuel Pressure Regulator: Description and Operation

Fuel Pressure Regulator

The fuel pressure regulator is installed on the fuel distributor rail on the right (cylinder row 4 - 6 or bank 2) in the engine compartment. A return line runs from the fuel pressure regulator to the fuel tank. The Technical Data describes how to check the fuel pressure. The holding pressure should be greater than 29 psi (2 bar) after 1 hour.