Before installing injector in engines that have been run
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.
- Check injector bore for dirt.
Clean only dirty injector bores.
Important - do not damage injector!
- Clean injector bore: To do so, preferably slide injector without uncoupling element (2) but with new PTFE sealing ring (1) in and out of injector bores several times.
The PTFE sealing ring must then be replaced.
- Clean contact surfaces of uncoupling elements (2) in cylinder head.
- Replace uncoupling element (2).
IMPORTANT:
Injector adjustment!
An injector adjustment must be carried out if an injector is replaced or changed on the cylinder side.
Injector adjustment is carried out with the aid of a so-called adjustment value.
The adjustment value is printed in two blocks of three digits on the injector.
The adjustment value must be read off before installation!
Enter the adjustment value according to the installation position (cylinder) of the injector.
If injector adjustment is not carried out, the engine may run roughly or fail to start.
Description of injector adjustment at end of instruction.