Diesel injection system BMW 7 Series E32

How a diesel engine works
In a diesel engine (diesel), clean air is sucked into the cylinders, and there it is very strongly compressed. Due to this, the temperature in the cylinders...

Turbocharger
The BMW diesel engine is equipped with a turbocharger (turbocharger). It has two turbine wheels on one shaft, which are located in housings separated from each...

Exhaust Gas Recirculation (EGR system)
The diesel fuel injection system is equipped with an exhaust gas recirculation system (eGR system), to reduce the concentration of toxic nitrogen oxides (NOx)...

Fuel filter heating system
When the ambient temperature drops, the fluidity of diesel fuel decreases due to the concentration of paraffin. Diesel fuel becomes viscous, like honey. For...

Diesel engine preheating system
On a cold engine, the autoignition temperature is not reached by air compression alone, so the engine needs to be warmed up. For this purpose, a pin glow plug...

Glow Plugs — Checking, Removing and Installing
If you have difficulty starting the engine, you should first check the compression in the engine. If it is too low, the engine will not start at low...

Pre-glow relay — checking, removal and installation
Removal Remove the cabin air filter housing on the right rear of the engine bay to access the fuse/relay box. Remove the screws and remove the cover from the...

Removal air from the fuel system
If the fuel in the tank runs out while driving or if parts of the fuel system have been replaced, then, as a rule, it is not necessary to remove air from the...

Fuel Shut-Off Device — Checking, Removing and Installing
The electromagnetic shut-off device on the fuel injection pump opens the way for fuel when the ignition is turned on. It should be checked if the engine does...

Injectors — removal and installation
Faulty injectors can cause severe engine knocking and damage to its bearings. If you suspect this, let the engine idle and loosen the union nuts of the...

Checking/adjusting the start of injection pump delivery
To check, you need a dial indicator with a corresponding adapter for screwing into the high-pressure fuel pump. The engine should be cold during the check, but...

Intake manifold — removal and installation
The intake manifold must be removed to provide working space, for example before working on the injection system. Removal Remove the engine cover and boost...

High pressure fuel pump
Fuel injection pump mounting elements 1 — key; 2 — sealing ring; 3 — Fuel injection pump; 4 — electromagnetic valve for cutting off fuel supply; 5 — injection...

Technical data of the fuel system and preheating system of the diesel engine

Diagnostics of diesel fuel injection system faults
Before starting troubleshooting, the following prerequisites must be met: errors when starting the engine must be excluded, there must be fuel in the tank, the...

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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 5 Series E34 (1988-1996)

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