Engine power system. General information The engine fuel system includes the fuel tank, fuel lines, fuel filter, fuel pump, and carburetor or fuel injection device with an air filter. The plastic fuel...
Checking the fuel pump relay Gasoline engines: 1 — lambda probe heating relay; 2 - the main relay of the electronic engine control system (DME); 3 - fuel pump relay. Diesel engines: 1 -...
Checking the performance of the fuel pump Gasoline 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...
Checking the Fuel Gauge When the fuel level in the fuel tank drops, the float of the fuel reserve sensor drops. This increases the resistance of the sensor removed from the sliding...
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 DME digital...
Motronic DME M3.1 system on six-cylinder engines The DME M3.1 system is a further development of the Motronic M1.1 system. Fuel injection control is sequential, that is, separate for each engine cylinder. In...
Fault accumulator All variants of the DME system have emergency modes: If a sensor fails, the control unit uses the average values stored in the unit instead of the signals from...
Checking the idle speed and CO content Attention: When the Motronic system is operating, the idle speed is controlled by the electronically controlled idle speed controller, the CO content is...
Throttle cable adjustment Attention: The throttle cable is sensitive to bending and therefore requires special care during installation. A single slight bend in the cable can cause the...
Removal and installation of nozzles The nozzles provide a cone injection of fuel and after injection are hermetically sealed. Leaky injectors make it difficult to start a hot engine. With...
Technical data of preheating system and feeding system Maximum preheating time at temperatures: below 60°C: 5 sec above 60°C: 0 sec Emergency shutdown of preheat: 8 (* 5) sec Glow plug resistance at 20°C: 0.4 - 0.6...