Car oil cleaning instructions two or three things

The role of the oil circuit in the work of the engine:

For the complete working principle of each component of this entire oil circuit, most of the car owners are not professional and technical personnel, so they do not need to study thoroughly, just understand the basic working principle. The general working principle is also very simple, including the following steps:

1. The oil pump pumps the oil in the oil tank into the pipeline to maintain a pressure of about 2.5kg.

2. The fuel filter plays a filtering function between the fuel pump and the fuel pressure regulator to filter out harmful particles and moisture in the fuel.

3. The fuel pressure regulator controls the pressure in the oil circuit, and then injects the fuel into mist through the fuel injector, mixes with air and enters the cylinder (some engines use direct injection in the cylinder).

Reasons for cleaning the oil circuit:

After the fuel system has been working for a period of time, the carbon deposits and gums formed by combustion will adhere to the fuel injector, causing the fuel injector to stick or even block. The impurities and dust in the air and gasoline will also cause poor or blocked oil passages, and eventually form carbon deposits and deposits on the fuel injectors (valves, combustion chambers, and intake pipes will also form carbon deposits, but this article is mentioned It is only for carbon deposits on fuel injectors).

Fuel injection nozzle not cleaned for a long time

If the oil circuit is not cleaned for a long time, carbon deposits and deposits will block the needle valve and valve hole of the injector, affecting the performance of the precision parts of the injection system, resulting in poor fuel injection, poor atomization, or even no fuel injection. As a result, the idling speed of the car is unstable, fuel consumption rises, acceleration is weak, and starting is difficult.

General cleaning oil way:

1. Add fuel cleaner directly to the fuel tank. This is the easiest way, but the effect is not lasting and the cleaning effect is not thorough. Suitable for vehicles with short mileage.

2. Use the "hanging bottle" method for cleaning.

The "sling bottle" method can clean the carbon deposits and deposits of the oil circuit and valve at the same time, and it is also the method that auto repair shops usually recommend.

3. Use a disassembly-free washing machine for cleaning.

This method is to connect the engine oil inlet pipe and oil return pipe with the oil inlet pipe and oil return pipe of the disassembly-free cleaning machine through a special cleaning machine, and connect the oil inlet pipe and the oil return pipe with a special interface to form a loop. The operation is convenient and quick, but because it only cleans the fuel injector, it does not clean the carbon deposit on the valve, so...... You know, auto repair shops don't recommend. However, on the cleaning of the oil circuit alone, the effect is obvious and it is a good way to clean the oil circuit.

4. Remove the entire oil circuit directly and clean it thoroughly.

This method is suitable for cars with more than 100000 kilometers and very serious oil blockage. Needless to say, the effect is definitely the best, but it takes the longest time and has the highest technical requirements for maintenance personnel. And if you usually pay more attention to the care of the car, it is generally not necessary to use this method. So this method is also a last resort.

frequency of cleaning oil circuit:

Cleaning the oil circuit is an essential maintenance item, but it is not necessary to do every maintenance. Take shampoo as an example. Washing your hair once a day is a love of cleanliness, and washing your hair once a week is disgusting, but washing your hair once an hour is unnecessary. Not only is it unnecessary, it will also cause damage to your hair.

The same is true for the cleaning of the oil circuit. Some car owners are careless and feel that it is useless to clean the oil circuit. Never clean the oil circuit, which will cause the above-mentioned consequences for a long time. There are also some car owners, like the one mentioned at the beginning of the article, who listen to some profit-making black-hearted repair shops and clean them frequently. It seems to be "clean", but in fact it is completely unnecessary. Not only is it unnecessary, because the cleaning agent contains a lot of chemical components, over-frequency cleaning will also cause great damage to the three-way catalyst and cause unnecessary damage to the vehicle.

The normal cleaning frequency should be 3-40000km/time, and it should be increased or decreased according to the road conditions and vehicle conditions of the vehicle. For example, the congestion of urban road conditions will accelerate the blockage of the oil circuit.

How to maintain the car oil?

As the saying goes, "three points, seven points". If you want to extend the cycle of cleaning the oil circuit and protect the car's oil circuit, daily maintenance is also essential. summarized into the following points:

1. Refueling should go to a regular gas station and add high-quality fuel.

2. You can choose to add some fuel cleaner to the fuel tank every time, but it should not be too frequent.

3. During maintenance, be sure to pay attention to the inspection and replacement of the fuel filter to enhance the filtering effect of the fuel.