Oil consumption in the engine. Six Reasons
It is hardly possible to find a motorist who would notworried about the increased oil consumption. Particularly offensive when it happens with a new engine. Here are the most common reasons for the oil consumption in the engine.
1. Excessive crankcase pressure
For all engines, a breakthrough of gases is characteristic. Because of the high pressure, the combustion gases do not fall into the piston rings, but into the crankcase of the engine. If, due to the wear of valves, rings and pistons, the gas breakthrough exceeds the standard value, a very high pressure arises in the crankcase of the motor, and the oil has to be pushed through the seals. A good example is the sealing of the valves' pins, testing the load too high under high pressure. This leads to the fact that the oil consumption in the engine greatly increases.
2. Incorrect cylinder head assembly
If this part is not properly installed, thethere will be a skew of the elements. As a result, in the vicinity of the combustion chamber, unsealed areas are formed blocking the path to the oil circuit. To prevent skewing, you must follow the sequence in the tightening procedure, as well as the angle of screwing.
3. Defective engine oil
When using unsuitable or substandardvarieties of oil can not provide reliable operation of the engine in all modes. For example, the wear of the motor increases with cold start, high-temperature operation modes, etc. The oil must exactly correspond to the requirements of the machine manufacturer. And both in terms of performance and viscosity.
4. Depreciation of fuel pump (high-pressure fuel pumps)
In 25% of cases, a large oil consumption in the engineis due to the wear of in-line injection pumps. Lubrication of the details of the injection pump is carried out through the corresponding motor circuit. If the components of the injection pump are worn, during operation of the pistons, the oil can enter the working area of the pump. Here it mixes with the diesel fuel and gets into the combustion chamber. To reduce oil consumption in the engine, it is required to regularly check in-line injection pumps, especially in diesel engines.
5. Injection of cylinders
The skewed cylinders indicate an unevena contact spot with separate places of a dry acting cylinder sleeve. If there are uneven spots on the outer wall of the cylinder liner, then this is a clear sign of its skewing. As a consequence - the piston rings can not provide the proper level of sealing, and the oil flows into the combustion chamber. In addition, the pressure in the crankcase of the motor increases. Possible causes of skewing include: incorrect tightening of bolts, contact corrosion, clogging of the cooling system, etc. Correct the skew, and the oil consumption in the engine will be significantly reduced.
6. Irregular service
If the manufacturer's instructions are not followedmotor periodicity inspection in it will always be contaminated oil. As the additive package is consumed during operation, there is a risk of wear. To avoid breakage, more frequent oil refilling is required.