If you tried to start the car by towing, then the timing belt could slip through a few teeth. If the engine is idling and when you try to increase the speed it immediately stalls or stops after a little work, then most likely air has entered the fuel system. It is worth paying attention to the exhaust. In this case, it is usually white with a characteristic smell of diesel fuel. Underpressure in the fuel flow can be caused by clogged fuel inlet or fuel filter. Most often, it is the fuel filter that is clogged, and such troubles occur mostly in winter.
Never repair fuel filters. Diverse «flushing», «blowing», and other supposedly restorative procedures, at best, simply will not give an effect, and at worst, they will further aggravate the situation. Fuel passing through such «restored» the filter, not only does not receive the prescribed cleaning, but also washes away all the dirt accumulated in it before. This can quickly disable the precision injection pump mechanism.
Never install multiple fuel filters. From the point of view of achieving the purity of the fuel entering the engine, there is no point in this multi-stage filtration. Additional filters are not just useless, but harmful. They create excessive resistance, due to which the high-pressure fuel pump works with overload and fails faster. Increased resistance in the piping can also cause air to be sucked in. Additional filters do not contribute to the separation of water from the top beer. For this, there are special settling tanks-separators. The presence of such a separator is indicated by a small plug from below under the filter. The accumulated moisture should be drained approximately every 3000 km. It is necessary to drain the liquid until almost clean fuel flows.
The presence of water in the fuel also causes white clouds of exhaust smoke. Some models may have an indicator on the instrument panel that will indicate that there is water in the fuel. If the indicator lights up, it is better, without delay, to stop, turn off the engine and drain the liquid from the separator. If necessary, you can repeat the procedure. If after that the indicator does not want to go out, then the problem is probably in the electrical circuits of the system for indicating the presence of water in the fuel.
If a freshly running engine stalls, make sure there is still fuel in the tank. If there is fuel, then remember if there was any sharp sound before the engine stopped. This sound is accompanied by a broken timing belt. If there was a sound, then it is better not to scroll the engine.
Air in the fuel system may be another reason for the engine to stop. You can try to directly connect the fuel pump to any container with fuel. If the engine starts running, then the cause has been found. For any problems with the fuel pump, it is best to contact a specialist. If the injection pump is normal, you can try to loosen the fittings on the injectors. If, during attempts to start the engine, fuel begins to flow out from under them in a pulsating jet, this means that faulty nozzles do not provide a normal supply of fuel to the combustion chambers. If black smoke appears during the exhaust, this is one of the signs of a stuck needle in the nozzle.