Do you need to clean the nozzle when cleaning the oil circuit for automobile maintenance?

There is no need to clean the nozzle if there is no abnormality, or it is about 50 thousand to 80 thousand kilometers.

As one of the key components of EFI engine, the performance of injector will be seriously affected. Nozzle blockage will seriously affect the performance of the car. The reason for the blockage is that carbon deposits in the engine are deposited on the fuel nozzle or impurities in the fuel block the fuel nozzle channel. After the car runs for a period of time, the fuel system will form certain deposits.

The formation of deposits is directly related to automobile fuel: first, because gasoline itself contains colloid and impurities, or dust and impurities brought in during storage and transportation, deposits similar to oil sludge are formed in automobile fuel tanks, oil intake pipes and other parts over time.

Secondly, the unstable components in gasoline react at a certain temperature to form colloid and resin-like viscous bodies. When these viscous substances are burned in the nozzle, intake valve and other parts, the deposits will become hard carbon deposits.

Extended data:

Due to urban traffic congestion, cars are often at low speed and idle speed, which will aggravate the formation and accumulation of these deposits. The deposits in the fuel system are very harmful.

Deposits will block the needle valve and valve hole of injector, affect the working performance of precision parts of EFI system, and lead to the decline of dynamic performance; Deposits will form carbon deposits in the intake valve, which will lead to the untidy closing of the intake valve, unstable idle speed of the engine, increased fuel consumption and deterioration of exhaust emissions.

Deposits will form hard carbon deposits on the piston crown and cylinder head, which is easy to cause engine failure due to its large heat capacity and poor thermal conductivity. In addition, it will shorten the service life of the three-way catalyst. The work of injector plays an important role in the power of each engine.

Due to poor fuel, the injector does not work normally, resulting in serious carbon deposition in the cylinder; The accelerated wear of cylinder and piston ring will cause unstable idle speed, rising fuel consumption, weak acceleration, difficult start-up, excessive emission, complete blockage of injector and damage to engine.