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 (engine cover). Refer to => [ Air Filter and Engine Cover ] Air Filter and Engine Cover.

The fuel system is under pressure!

• Always wear protective eyewear and protective clothing to prevent injuries and fuel from coming in contact with your skin.

• Before loosening line connections, place a cloth around the connection point. Then release pressure by carefully disconnecting the line.

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






- Seal or cover the openings in the intake manifold.

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

Installing

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

- Press the fuel 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 correct fitting.

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

- Bolt the fuel rail to intake manifold.

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

- Connect the battery.

• If fuel injectors are replaced, erase 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