Gasoline engine injection system BMW 5 Series E39

Petrol injection system — general information
BMW petrol engines are equipped with the Bosch-Motronic system. This is a combined ignition and injection system, which is also referred to as the DME system...

Trouble code memory
The control unit electronics detect faults in the injection and ignition systems, such as defective sensors, plug connectors or leaks (unreliability of...

Safety precautions and care when working with the injection system
Caution: When working with the power supply system maintain exceptional cleanliness . The fuel supply system is under pressure. Therefore, before replacing...

Operation of the injection system
Fuel is sucked from the fuel tank by an electric pump and fed through the fuel filter to the manifold and then to the valve injectors. The pressure regulator...

Checking ignition and injection systems
Targeted search and elimination of all existing faults are performed using special branded devices. These devices are very expensive and, as a rule, are...

Adjusting the gas thrust
Note: The gas rod is very sensitive to longitudinal fracture, so it must be handled very carefully during installation. One slight longitudinal fracture can...

Removal and installation the throttle valve pipe
The throttle body consists of the ASC+T pre-tube and the main tube. ASC+T System Data are given here . Removal Compress the wire clamps and disconnect the plug...

Checking/removing and installing the idle air control valve
The idle speed control valve is located at the intake manifold and is connected by hoses before and after the throttle valve pipe. Note: In order to weld, the...

Checking/removing and installing the temperature sensor
Temperature sensors measure the coolant temperature in the cylinder block, as well as the intake air temperature, and transmit the corresponding signals to the...

Checking the valve injectors
Valve injectors periodically inject fuel with a cone-shaped stream and close tightly after injection. Leaky valve injectors cause difficulties when starting a...

Removal and installation valve injectors
New valve injectors are coated with a preservative lubricant. After five minutes of operation, this lubricant is washed away by the fuel flow. Due to the risk...

Diagnostics of faults of the petrol injection system
Before detecting a fault based on diagnostics, the following prerequisites must be met: conditions for the occurrence of errors during starting are excluded....

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Similar sections for other types of BMW cars:
Power unit: Fuel system (petrol) BMW 7 Series E38 (1994-2001)

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