What is the matter that the injector of high-pressure * * rail diesel vehicle does not inject oil?

The non-injection of diesel nozzle is the cause of nozzle blockage.

It can be dredged with a needle, and it should be carefully cleaned after dredging. If the cylindrical surface of the needle valve is seriously worn, the needle valve couples should be replaced in pairs.

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.

Pay attention to the cleanliness of the fuel injector during maintenance, and blow it before assembly, which seems redundant but actually necessary.

Extended data:

Effect of carbon deposition

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: firstly, because gasoline itself contains colloid and impurities, or dust and impurities brought in during storage and transportation, deposits similar to sludge are formed in automobile fuel tanks and oil intake pipes 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.

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