Attention: In case of difficult starting, check whether fuel is supplied to the injectors. Loosen the union nuts on the two injectors and start the engine without preheating until fuel emerges from the union nuts. Tighten the union nuts and start the engine according to the instructions.
Attention: If the supply system does not automatically bleed air, proceed as follows:
Fill injection pump with diesel fuel.
Fill the fuel filter with diesel fuel.
Check the engine by towing the car.
These measures can achieve rapid removal of air. Observe the requirements for cleanliness when working on the injection system.
In addition, make sure that fuel does not get on the hoses of the cooling system. If necessary, the hoses must be cleaned immediately. Damaged hoses must be replaced.
Diesel fuel is sucked in by the high pressure fuel pump directly from the fuel tank. In the high pressure fuel pump (injection pump) high fuel pressure builds up (120-160 bar), which is injected into the cylinders, in accordance with a predetermined ignition sequence.
At the same time, the regulator in the injection pump controls the amount of injected fuel in accordance with the position of the gas pedal. Through injectors, diesel fuel is injected at the required moment into the prechamber of the desired cylinder. Due to the shape of the prechamber and swirl chamber, the intake air acquires a certain swirling motion during compression, so that the injected fuel is optimally mixed with the air.
Before fuel enters the injection pump, it passes through the fuel filter. The filter separates the fuel from impurities and water. Therefore, it is important to periodically drain the water from the filter and, if necessary, change the filter elements.
The injection pump does not require maintenance. All moving parts of the pump are lubricated with diesel fuel. The pump is driven by the crankshaft through a toothed belt.
Diesel works on the principle of self-ignition. Therefore, it cannot be stopped by cutting off the voltage supply. For this purpose, a magnetic valve is used. When the ignition is turned off, the voltage supply to the solenoid valve is interrupted and the valve stops supplying fuel to the engine cylinders. This ensures that the fuel supply is cut off before the steering lock is locked. When the engine is started, the ignition switch voltage is applied to the solenoid valve and the fuel supply to the engine is opened.
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