Necessary preliminary tasks
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2014 BMW Alpina B7L, 2014 BMW Alpina B7, and 2013 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
- Remove IGNITION COIL of corresponding cylinder
NOTE:
- Ignition coils must not be fouled by fuel!
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail! Cloths/rags must therefore be used to prevent fuel from getting into the spark plug slots!
- Before installing ignition coils, clean spark plug slots with compressed air.
- Make sure the spark plug slot is absolutely clean.
- Remove PRESSURE LINES on corresponding injectors
NOTE:
The following description applies to all injectors.
Release bolt (1) and remove holding-down element (2).
Remove injector (1).
NOTE:
If several injectors are removed, ensure that each injector is reinstalled in its original location (cylinder).
Mark injectors.
Mark injectors.
After removing, fit protective caps (1 and 3) to injector tip and fuel line connection.
Protective caps are available from BMW Parts Service.
Installation:
When installing a new injector:
- Use a new uncoupling element (2).
- Remove protective cap (1) from injector tip max. 10 min. before installation (PTFE sealing ring swells up).
Installation:
When reusing fuel injector:
- Replace uncoupling element (2).
- Replace PTFE sealing ring (1).
A PTFE seal which has been heated once by engine operation must be replaced before the fuel injector is reinstalled.