Diesels today are considered one of the most reliable and durable engines. Indeed, they can pass thousands of kilometers without repair. But they also have their "pain points". These are certain components that most often fail and can disrupt the operation of the entire engine.
Compared to gasoline engines, the diesel injection system has to constantly be subjected to higher loads. At the same time, it is very sensitive to the slightest deviations in the engine operation. First of all, this is the well-known desire of drivers to save on fuel. If it contains water or other small impurities that the filter will let through, then the nozzles, Bosch fuel pump or injector may fail. In some cases they can be restored, but not always: they may need to be replaced.
To prevent a malfunction, it is necessary once a year, regardless of the vehicle's mileage during this time, to change the filters in the engine. It will be much cheaper than repairing.
In case of any breakdown of the turbocharger, the power and performance of the engine first of all fall. And most often the driver himself is to blame. There are two main mistakes that lead to a breakdown of a turbocharger: rarely change the oil and start abruptly on a cold engine.
Theoretically, the turbocharger can not be changed, but only restored. In practice, this is not always possible, and no one can guarantee that an engine with a restored unit will be able to return to its previous performance indicators.
Solid particles, which are contained in the exhaust gases, settle on them. In theory, they should burn, but in practice they only do so when driving long distances and at high speeds. If the car moves exclusively in the city and does not have time to accelerate, then the pollution does not have time to burn out and settles on the filter. As a result, engine performance deteriorates and fuel consumption increases.
Another problem for those drivers who only move around the city for short distances. It should be remembered that even with this mode of movement, it is necessary to warm up the engine for several minutes after starting.
Timely preventive maintenance and knowledge of the rules for operating diesel engines will help you avoid the most common malfunctions.