Diesel injection system BMW 7 Series E32

Working principle of diesel engine
For 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
BMW diesel engine equipped with a turbocharger (turbocharger). It has two turbine wheels on one shaft, which are located in housings separated from each other....

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 pre-heating system
On a cold engine, the auto-ignition temperature is not reached as a result of air compression alone, so the engine must be warmed up. For this purpose, a pin...

Glow plugs — checking, removing and installing
If there are difficulties with starting the engine, then first you need to check the compression in the engine. If it is too low, the engine will not start at...

Preheat relay — check, removal and installation
Withdrawal Remove the cabin air filter housing from the rear right side of the engine compartment to access the fuse and relay box. Loosen the screws and...

Bleeding air from the fuel system
If the fuel in the tank ran out while driving, or if parts of the fuel system were replaced, then, as a rule, air should not be bled from the system, because....

Fuel cut-off device — check, removal and installation
The electromagnetic cut-off device on the injection pump opens the way for fuel when the ignition is turned on. It must be checked if the engine does not start...

Nozzles — removal and installation
Faulty injectors can cause severe engine knocking and damage to engine bearings. With such suspicions, the engine should be left to idle and the union nuts of...

Checking / adjusting the start of injection pump supply
To check, you need a dial indicator with an appropriate adapter for screwing into the high-pressure fuel pump. The engine should be cold when checking, but its...

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

High pressure fuel pump
Installation elements for injection pump 1 - key; 2 - sealing ring; 3 - injection pump; 4 - solenoid valve for cutting off the fuel supply; 5 - injection...

Diagnosis of malfunctions of the diesel fuel injection system
Before troubleshooting can begin, the following prerequisites must be met: there must be no errors when starting the engine, there must be fuel in the tank,...