Injector adjustment

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 Value Printed In Blocks Of Digits On Injector

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

• Connect BMW diagnosis system
• Identify vehicle
• Select "Function selection"
• Select "Service functions"
• Select "Engine electronics"
  Fig 2: Identifying Adjustment Value Printed In Blocks Of Digits On Injector

  Courtesy of BMW OF NORTH AMERICA, INC.
• Select "Adjustment function"
• Select "Adjust injectors"
• Select "Test plan"
• The adjustment value must be entered for each cylinder.