Fuel Injectors

Fuel Injectors

Removing

• Follow all safety precautions. Refer to => [ Safety Precautions ] Safety Precautions.

• Pay attention to the rules of cleanliness. Refer to => [ Clean Working Conditions ] Clean Working Conditions.

- Disconnect the battery.

- Remove the air filter with engine cover. Refer to => [ Air Filter and Engine Cover ] Air Filter and Engine Cover.

The fuel lines are under pressure.

Danger of personal injury to eyes and skin.

Wear protective goggles and protective clothing in order to avoid injury and contact with the skin. Wrap a cloth around the connection before removing a fuel hose. Open the connection carefully and release the pressure.

- Disconnect the fuel supply line - 1 - and the vent line - 2 -.






- Seal the lines so that the fuel system is not contaminated by dirt, etc.

- Disconnect the connectors - 1, 2 and 6 -.






- Remove the wiring harness - 3 - from the transport strap.

- Pull the clamps - 4 - and retaining ring - 5 - out of the locking mechanism.

- Remove the bolts - 7 - and remove the transport strap.

- Remove bolts - 1 - and pull the fuel rail with the injectors, evenly out of the intake manifold.






- Seal or cover the openings in the intake manifold.

- Pull of the retaining clips - 3 - and then the injectors.

Installing

- Install new O-rings for the injectors and coat them lightly with clean engine oil.

- Press the injectors into the fuel rail so that the tabs - 1 and 2 - align.






- Slide the retaining clip - 3 - as shown, into the groove in the fuel injector. The collar - 4 - must be located correctly in the cutout of the retaining clip on both sides.

- After assembling, check all fuel injectors for the correct fitting.

- Attach the fuel rail with secured injectors to the intake manifold and press it in uniformly.

- Bolt the fuel rail to the intake manifold.

The rest of the installation follows the reverse of the removal procedure. When doing this note the following:

- Connect the battery.

• If fuel injectors are replaced, erase the adaptation values and adapt the Engine Control Module (ECM) again. Refer to => "Guided Functions" in the vehicle diagnostic tester.

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

Tightening Specifications