When buying a diesel car, many motorists pay attention only to the low consumption of inexpensive fuel, forgetting about the high cost of maintenance and operation. Engine malfunctions can be divided into the following groups: engine features (problems associated with its design), poor quality service, illiterate operation, poor fuel quality and many other reasons. Let's consider the most common ones.
Constructive and production factors
Let's make a reservation right away that diesel engines are quite reliable, design-related flaws, as a rule, appear in severe operating conditions and with mileage exceeding the engine's resource.
Poor service quality
Poor quality of service and improper operation is the first and most important problem. It is recommended to change the oil after 7500-9000 km, regardless of the instructions in the instructions.
Diesel fuel quality
The share of all breakdowns falls on the quality of the fuel, this share is 50%. But this fact can be prevented in advance, because the negative consequences are stretched over time. But the presence of water and mechanical impurities in the fuel is destructive.
"Natural" wear and tear
Not in the last place are the malfunctions associated with the mileage of the car, it is because of the high mileage that the engine parts and fuel equipment wear out. In this case, the engine starts for a long time in cold weather, even with serviceable candles. Note that the compression limit for most engines is 20-26 bar.
Consequences of poor-quality repairs.
Diesel repair requires good knowledge and design features of the engine being repaired and diligent execution. It is not worth trying to repair the engine yourself, most often this leads to more serious consequences.
