How many kilometers is the nozzle of diesel oil pump cleaned?

Usually, 4S shops will recommend about 50,000 kilometers of cleaning. If the car is in good condition, 80-65438+100000 yuan can be cleaned once.

For the same type of EFI vehicle, the pressure of gasoline pump is constant. Regardless of the throttle opening, the pressure of the fuel nozzle is always constant as long as it is adjusted by the fuel pressure regulator.

Except for the generator rectifier in the previous part, there is basically no contact with AC in the car. When the nozzle is blocked, the fuel injection is not smooth, or there is carbon deposit and colloid in the nozzle gap, which can not reach the designed fuel injection quantity or atomization effect and needs to be cleaned.

Extended data:

The working quality of fuel injector will seriously affect the performance of engine. 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.

Reference source: Baidu Encyclopedia-Fuel Injector