Fuel Pressure Regulator: Description and Operation

2458 Fuel-pressure regulator

The fuel-pressure regulator does not have a connection for the intake pipe pressure and is integrated into the tank installation unit. Its nominal pressure is set at 3.8 ± 0.1 bar for a flow rate of 80 l/h. When running at idle speed, pressure is increased by approx. 0.1 bar due to the low fuel requirement of the engine.

NOTE: To check the fuel pump's delivery volume, the special tool 9705 (pressure regulator 2.5 bar) is used.