Ignition Coil: Service and Repair

Ignition Coils with Power Output Stages

Special tools, testers and auxiliary items required

• Ignition Coil Puller (T40039)

• Special Lubricant (G 052 141 A2)

Removing

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

• Ignition system component overview. Refer to => [ Ignition System Component Overview ] Service and Repair.

• To pull off spark plugs, place the ignition coil puller (T40039) on the topmost thick rib - arrow - of the ignition coil with power output stage.






• Lower ribs may be damaged if they are used.

- Pull all the ignition coils out approximately 30 mm from the spark plug holes using the ignition coil puller (T40039).






- Release the connector - arrows - and disconnect all connectors from the ignition coils at the same time.






Installing

• The ignition coils with power output stages must be greased with special lubricant (G 052 141 A2) to install new spark plugs. This prevents the sealing hose on the ignition coil from sticking on the spark plug. The special lubricant must spread onto the spark pug when installing the ignition coil.

• New ignition coils with power output stages are already greased when delivered.

- Apply a thin bead of special lubricant (G 052 141 A2) around the ignition sealing hose - arrow -. The bead must be 1 to 2 mm thick.






- Insert all ignition coils loosely into the spark plug shafts.

- Align the ignition coils with the connectors - arrows - and connect them all at the same time.






- Press the ignition coils evenly onto the spark plugs by hand.