BMW 3 Owners & Service Manuals

BMW 3: Direct rail

Fuel preparation
Injector mounting

  1. Mounting bolts
  2. Plastic sleeve (not required to be reinstalled after taken apart for service)
  3. Holding clamp with bayonet fitting
  4. Rail
  5. Solenoid valve injector
  6. Casting lug

The solenoid valve injectors are fastened to the holding clamp with a bayonet fitting. There is a plastic sleeve between the holding clamp and direct rail. This is not designed to collect escaping fuel. This is only used to support a helium leakage test during pre-assembly at the factory in order to check the tightness. After the initial assembly, this plastic sleeve is of no relevance to the engine operation. When the solenoid valve injectors are replaced, the plastic sleeves are no longer required and do not need to be reinserted.

The mounting bolts of the holding clamp must be replaced each time they are released.

The housing on the solenoid valve injectors is sensitive to excessive tensile forces and excessive rotational angles. When removing and installing the solenoid valve injectors, the procedure in the current repair instructions must be followed If the solenoid valve injectors are damaged, fuel may be discharged.


     Solenoid valve injector

    Measures at the solenoid valve injector The following graphic illustrates the differences between the HDVE5 and HDEV6 fuel injectors: Solenoid valve injectors Solenoid valve injector HDEV5 Soleno

     Engine Electrical System

    Digital Motor Electronics (DME) DME 8 control unit The Digital Motor Electronics (DME) is the computing and switching center. Sensors on the engine and the vehicle deliver the input signals and actu


     Removing the flat high-voltage connector

    Bridge for high-voltage interlock loop Before the high-voltage connector can be disconnected, the bridge for the high-voltage interlock loop must first be removed. The bridge closes the circuit of the high-voltage interlock loop in a connected state. The SME and EME control units continuous

     Areas to be avoided

    Concept Areas that should be driven around can be specified as areas to be avoided. General information Stored areas to be avoided can be activated and deactivated. Defining an area to be avoided 1. Select the area to be bypassed on the map. 2. Press the button on the Controller. 3. Press the Co

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