Remove and Install

Injectors (B234i)

WARNING
- Work only in a well-ventilated area. It approved equipment for the extraction of fuel vapor is available, be sure to use it.
- Wear protective gloves. Prolonged contact with fuel may give rise to skin irritation or dermatitis.
- Be mindful of the danger of causing sparks, such as when making and breaking electrical circuits, short circuiting components, etc.
- No smoking anywhere in the vicinity!
- Always have a suitable fire extinguisher near at hand.





Removal

1 Remove the upper half of the intake manifold, see page 194.

2 Carefully clean the areas round fuel connections and injectors.

3 Remove the two locating rails and unplug the injector connectors.

4 Remove the fuel rail retaining screws and lift up the fuel rail complete with injectors. Make sure you have some paper or the like handy to mop up fuel that runs out of the fuel rail or injectors.

5 Remove the injector retaining clips and remove the injectors.


Fitting

Fit in reverse order.

Inspect the rubber hoses/gaskets between the two halves of the intake manifold and also the throttle body 0-ring.

Check the kick-down wire and adjust it if necessary, see page 241

Note: Lubricate the 0-rings with Vaseline to facilitate assembly.

Important: Make sure that the connectors are plugged into the right injectors. The cables are marked.