Diesel engine power system BMW 5 Series E34

How a diesel engine works
In a diesel engine, fresh air is sucked into the cylinders, where it is highly compressed. This causes the temperature in the cylinders to rise above the...

Checking glow plugs
Verification condition: the engine is cold (ambient temperature), the battery is fully charged, battery voltage is not less than 11.5 volts. Check the 80 amp...

Self-diagnosis system and error codes
The diesel engine fuel system (DDE) control unit has a self-diagnosis system that stores fuel system failures in the form of codes. The preheating system is...

High pressure fuel pump device
1 High pressure fuel pump 2 Toothed pulley 3 Key 4 Spacer washer 5 Nut M12 6 Solenoid stop valve 7 O-ring 8 Spring washer 9 Nut 10 Front mounting nut M8 (2...

Glow plugs with burnt out rods
Burnt glow plug rods are often the result of a malfunction of the injectors. These malfunctions cannot be attributed to a defect in the glow plug. If such...

Removal air from the fuel system
After emptying the fuel tank or after replacing fuel system components, air bleeding from the fuel system is generally not required, since air bleeding occurs...

Removal and installation, checking of the electromagnetic stop valve
The solenoid valve for stopping the fuel is located on the high-pressure fuel pump above the fuel hose connections. As soon as the ignition key is set to the...

Removal and installation injector nozzles
Defective injectors can cause strong knocking in the engine, the cause of which can be mistakenly attributed to the destruction of bearings. In such cases, let...

Fuel filter heating device
To ensure the fluidity of diesel fuel at low temperatures, it is heated. This is done by an electric fuel filter heater. This prevents the fuel from thickening...

Checking the start of the high pressure fuel pump
To check, you need a dial indicator with a corresponding adapter to screw into the pump. When checking, the engine must be cold (ambient temperature)....

Technical data of preheating system and power supply system

Diagnostics of faults of fuel injection system of diesel engine
Before searching for the cause of the malfunction using the diagnostic table, the following conditions must be met: driver errors when starting the engine are...

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Similar sections for other types of BMW cars:
Power unit: Fuel system (diesel) BMW 3 Series E46 (1998-2006)
Power unit: Fuel system (diesel) BMW 7 Series E38 (1994-2001)

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