High Pressure Fuel Pump

High Pressure Fuel Pump

Removing

- Remove the upper intake manifold. Refer to => [ Upper Intake Manifold ] Upper Intake Manifold.

- Remove the high pressure pump toothed belt. Refer to => [ High Pressure Fuel Pump Toothed Belt ] High Pressure Fuel Pump Toothed Belt.

- Remove the bolts - arrows - and the high pressure line protective plate.






- Loosen the union nuts - 1 through 4 - and free up the high pressure lines.

- Disconnect the connector - 3 -.

- Remove the fuel supply hose - 1 - and return hose - 2 -.

- Remove the bolts - arrows - and remove the high pressure pump.






• Follow the guidelines for a clean working environment when working on the fuel system. Refer to => [ Clean Working Conditions and Fuel System Work Instructions ] Clean Working Conditions and Fuel System Work Instructions.

• Always follow these rules before and during work.

Installing

• Tightening specifications, refer to => [ High Pressure Pump Overview ] High Pressure Pump Overview.

Install in the reverse order of removal. Note the following:

• If the fuel pressure regulator valve or the high pressure pump has been replaced, then the adaptation values for the regulator valve must be reset. Refer to the vehicle diagnostic tester: Guided Functions, resetting the adaptation values for the fuel pressure regulator valve.

Letting the high pressure pump run dry will destroy it.

• The high pressure pump must be filled with fuel before starting the engine for the first time.

• Replace the gaskets and seals.

• The fuel return line must not be bent, damaged or plugged.

- Install the high pressure pump toothed belt. Refer to => [ High Pressure Fuel Pump Toothed Belt ] High Pressure Fuel Pump Toothed Belt.

- Install the high pressure lines. Refer to => [ High Pressure Lines, Installing ] Service and Repair.

- Install the upper intake manifold. Refer to => [ Upper Intake Manifold ] Upper Intake Manifold.

- Bleed the fuel system. Refer to => [ Fuel System, Bleeding and First Time Filling ] Fuel System, Bleeding and First Time Filling.