BMW 3 Owners & Service Manuals

BMW 3: Fuel preparation

The fuel preparation has again been adapted to meet the emission legislation requirements. The high pressure pump and the injectors have been revised and designed for an fuel injection pressure of 350 bar (5076 psi).

Fuel preparation
Overview of fuel preparation

  1. Fuel delivery line
  2. Rail pressure sensor
  3. Direct rail
  4. Quantity control valve
  5. High pressure pump
  6. Solenoid valve injector

Strict cleanliness must be observed when carrying out any work on the fuel system !

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     Fuel high-pressure pump

    The single-piston high pressure pump by Bosch, well-known from the B46 engine, is used. The high pressure pump HDP6 is driven by a triple cam which is attached to the exhaust camshaft. To be able to

     Direct rail

    Injector mounting Mounting bolts Plastic sleeve (not required to be reinstalled after taken apart for service) Holding clamp with bayonet fitting Rail Solenoid valve injector Casting lug Th

     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

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     Messages: for tires without special approval

    General information A low tire inflation pressure may cause the DSC Dynamic Stability Control to be switched on. Safety information Warning A damaged regular tire with low or missing tire inflation pressure impacts handling, such as steering and braking response. Run-flat tires can maintain limited

     Adaptive light functions

    Concept Adaptive light functions enable dynamic illumination of the roadway. General information The adaptive light functions may consist of one system or multiple systems, depending on the equipment version: Adaptive Light Control. Cornering light. Activating Press the button on the light swit

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