BMW 3 Series E36 car engine power system

Engine power supply system. General information
The engine fuel system includes the fuel tank, fuel lines, fuel filter, fuel pump and carburetor or fuel injection device with air filter. The plastic fuel...

Rules for maintaining cleanliness when working with the fuel system
When working with the fuel system, it is imperative to follow the following rules: Before removing, thoroughly clean the connection points and their...

Checking the fuel pump relay
Petrol engines: 1 — lambda probe heating relay; 2 - Main relay of the electronic engine management system (DME); 3 — fuel pump relay. Diesel engines: 1 - fuel...

Checking the performance of the fuel pump
Petrol engines Note: On diesel engines, the fuel pressure is measured in the fuel line between the filter and the high-pressure fuel pump, which can only be...

Removal and installation the fuel level sensor
On BMW 3-series cars, each chamber of the fuel tank has its own fuel level sensor. To check the sensors, they must be removed. The sensor in the right chamber...

Removal the right fuel level sensor with the fuel pump
Unscrew cover "1". 1 — fuel pump connector; 2 — fuel level sensor connector; 3 - fuel hose for supplying fuel to the pump; 4 — fuel tank compensation hose....

Checking the fuel gauge
When the fuel level in the fuel tank drops, the float of the fuel reserve sensor drops. At the same time, the resistance of the sensor, taken from the sliding...

Removal and installation the air filter housing/air intake hose
Removal Turn the knurled nut on the air flow meter connector to the left and remove. Loosen the air hose clamp. The illustration shows the air filter of the...

Fuel injection device for gasoline engines
BMW engines are equipped with the Motronic system from Bosch, which is a combined electronic ignition and fuel injection system, also called the digital engine...

Operating principle of the Motronic DME M1.7 system (four-cylinder engine)
Fuel is supplied by an electric fuel pump from the fuel tank through the fuel filter to the distribution pipe and then to the valve injectors. A pressure...

Motronic DME M3.1 system on six-cylinder engines
The DME M3.1 system is a further development of the Motronic M1.1 system. The fuel injection control is sequential, i.e. separate for each engine cylinder. In...

Fault Accumulator
All DME system variants have emergency modes: If any sensor fails, the control unit uses the average values stored in the unit instead of the signals from the...

Safety rules for working with fuel injection devices
Do not start the engine if the battery cables are not secured. Never disconnect the battery while the engine is running. When charging the battery with a fast...

Checking the idle speed and CO content
Important: When the Motronic system is operating, the idle speed is regulated by the electronically controlled idle speed controller and the CO content is...

Adjusting the throttle cable
Caution: The gas cable is sensitive to bending and therefore requires special care during installation. A single slight bend in the cable can cause the cable...

Removal and installation, checking of the idle speed control valve
The idle speed control valve is located on the intake manifold and is connected to the places in front of and behind the throttle valve fitting by hoses. Note:...

Removal and installation, checking of temperature sensor
The temperature sensor measures the engine temperature and transmits this information to the control unit. The temperature sensor contains an NTC element (NTC...

Removal and installation, checking of the intake air temperature sensor. Models 320i, 325i, 328i
The temperature sensor measures the temperature of the intake air and transmits this information to the control unit. Together with the signal from the air...

Removal and installation, checking of the fuel tank ventilation valve
The fuel tank ventilation valve regulates the supply of fuel vapors from the activated carbon container, which are burned when the engine is running. The...

Removal and installation injectors
The injectors provide conical fuel injection and after injection are hermetically sealed. If the injectors are not hermetically sealed, starting a hot engine...

Technical data of preheating system and power supply system
Maximum preheating time at temperatures: below 60°C: 5 sec above 60°C: 0 sec Preheating cut-off time: 8(*5) sec Glow plug resistance at 20°C: 0.4 - 0.6 ohms...

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