Gasoline engine injection system BMW 5 Series E39

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

Fault code storage
The electronics of the control unit detects malfunctions in the injection and ignition systems, such as defects in sensors, connectors or leaks (unreliability...

Safety and accuracy when working on the injection system
Attention: When working on the power system maintain exceptional cleanliness . The fuel supply system is under pressure. Therefore, before replacing parts, it...

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

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

Throttle adjustment
Attention: Throttle thrust is very sensitive to longitudinal fracture, so it must be handled with great care during installation. One slight longitudinal...

Removal and installation of a branch pipe of a butterfly valve
The throttle valve connection consists of an ASC+T pre-pipe and a main connection. Data about the ASC+T system are given here . Withdrawal Press wire clamps...

Check / removal and installation of the valve of regulation of idling
The idle air control valve is located at the intake manifold and is connected by hoses before and after the throttle valve. Attention: In order to boil, the...

Check / removal and installation of the temperature sensor
Temperature sensors measure the temperature of the coolant in the cylinder block as well as the temperature of the intake air, and transmit the corresponding...

Checking valve injectors
Valve injectors periodically inject fuel in a cone-shaped jet and close tightly after injection. Leaky valve injectors cause difficulty starting a hot engine....

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

Diagnostics of malfunctions of system of injection of gasoline
The following prerequisites must be met before fault diagnosis can be used to detect faults: Error conditions during start-up are excluded. It is true for both...