Gasoline engine injection system BMW 7 Series E32

Gasoline injection system. General description
Motronic DMEM 1.1-1.3 System Schematic 1 - fuel tank; 2 - fuel pump; 3 - fuel filter; 4 — fuel pressure regulator; 5 - ignition coil; 6 - air flow meter; 7 —...

Diagnostic device memory
The electronics of the control unit detect faults in the injection system and ignition system, such as faulty sensors, disconnected plugs and loose contacts....

Precautions and rules for working with the injection system
Attention: When working with the fuel system, it is necessary to pay attention to maintaining cleanliness. The fuel system is under pressure. Therefore, before...

Operation of the injection system
Fuel is drawn from the fuel tank by an electric fuel pump and supplied via a fuel filter to the fuel rail and then to the injectors. A pressure regulator on...

Ignition and injection systems — check
For a smart and effective troubleshooting, it is necessary to use special measuring devices, which are very expensive and usually only available in workshops....

Accelerator cable — adjustment
Attention: The gas cable is very sensitive to bending and therefore must be handled with great care during installation. One slight bend may cause damage...

Throttle body — removal and installation
The throttle body is made up of the ASC+T system body (automatic stability control and traction control system) and the main body. Removal Remove the plugs by...

Idle speed control valve — checking, removing and installing
The idle speed control valve is located on the intake manifold and is connected by hoses to the throttle body. Note: To check if the idle air control valve is...

Temperature sensor — checking, removal and installation
Two temperature sensors measure the temperature of the coolant and incoming air and transmit information to the control unit. The sensors have a working...

Injectors — checking
The injectors inject fuel in portions. The fuel stream from the injector has a cone shape, and the injector closes tightly after injection. Leaky injectors...

Injectors — removal and installation
New injectors are protected with a preservative. After about 5 minutes of operation, they are cleaned by the fuel passing through them. Injectors removed from...

Diagnostics of faults of the petrol injection system
Before starting the troubleshooting procedure, the following test conditions must be met. It is necessary to exclude errors during starting. When starting both...

Self-diagnosis. General description
Engine management systems installed in BMW vehicles are mainly produced by Bosch and include the following systems: Bosch Motronic versions 1.1/1.3; 1,2; 1,7;...

Reading fault codes
Reading fault codes without a fault code reader - flash codes Bosch Motronic 1.1 and 1.2 systems Only a limited number of emission-related flash codes can be...

Guidelines for Conducting Inspection Procedures
To check the control unit for fault codes, use a fault code reader or read the codes manually. The codes are in memory If one or more fault codes are detected,...

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