Injector adjustment

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If the DME control unit has been replaced, it will also be necessary to carry out adjustment of the injectors!

Injector adjustment is carried out with the aid of so-called adjustment values.

The adjustment values are printed in two blocks of three digits on each injector.

The adjustment values must be stored in the new control unit!

Fig 1: Identifying Adjustment Values Printed In Blocks Of Injector

Courtesy of BMW OF NORTH AMERICA, INC.

If injector adjustment is not carried out, the engine may run roughly or fail to start.

Fig 2: Identifying Adjustment Values Printed Area Location

Courtesy of BMW OF NORTH AMERICA, INC.

Read off the adjustment values and enter according to the installation location (cylinder) of the injectors:

Connect DIS Tester
Identify car
Select "Function selection"
Select "Service functions"
Select "Engine electronics"
Select "Adjustment programs"
Select "Adjust injectors"
Change "Test schedule"
The adjustment value must be entered for each cylinder.

NOTE: Check stored fault message.
Now clear the fault memory.