Fuel Pressure Regulator Valve, Checking

Fuel Pressure Regulator Valve, Checking

Special tools, testers and auxiliary items required

• Engine Bung Set (VAS 6122)

• Measuring Container, Fuel Resistant

• Follow the guidelines for clean working conditions when working on the fuel system. Refer to => [ Clean Working Conditions ] Clean Working Conditions.

• Always follow these rules before and during work.

- Remove the engine cover. Refer to => [ Engine Cover ] Engine Cover.

- Loosen the hose clamps - arrow - and remove the fuel hose from the fuel rail.






- Seal the open fuel supply hose with a plug from the engine bung set (VAS 6122).

- Connect the hose - 2 - to the return connection for the fuel rail - 3 -.






- Keep the hose in the measuring container - 4 - in order to measure the return quantity.

- Start the engine and let it run for 30 seconds (sec.) at idle.

• Target value in 30 seconds: 90 to 110 milliliters (mL)

If the specified value is not attained, then the fuel pressure regulator valve is faulty.