Under what circumstances does the car need to clean the oil nozzle?

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.

This phenomenon sometimes occurs when the fuel nozzle is slightly blocked:

1, when the first gear starts, the car is a little shaky, and when it is engaged in high-grade acceleration, this phenomenon disappears again; If all kinds of sensors in the car work normally, the throttle body has been cleaned and the circuit is normal, it is likely that the fuel injector is slightly blocked.

2. However, when accelerating in high gear, slight gum may be sprayed away (dissolved) again, and the performance of the car will be restored. This slight blockage of the fuel nozzle usually does not require cleaning. Because slight gum can be dissolved, it is not unreasonable for some people to say that vehicles should drive at high speed.

Extended data

1, nozzle blocked

It can be dredged with a needle, and it should be carefully cleaned after dredging. The large plane of needle valve body is in poor contact with the plane of injector body, or the cylindrical surface of needle valve is seriously worn. If the large plane of needle valve body is in poor contact with the plane of injector body, chromium oxide can be coated on the flat plate for figure 8 grinding; If the cylindrical surface of the needle valve is seriously worn, the needle valve couples should be replaced in pairs.

2. Poor sealing

The needle valve and needle valve body are poorly sealed, resulting in poor atomization of the nozzle or oil dripping.

This kind of fault can be coated with fine chromium oxide or toothpaste on the sealing belt at the needle end, but never on the cylindrical part. Then insert the needle valve into the needle valve body and turn it while knocking until it is tightened. Chromium oxide or toothpaste must be washed off after grinding.

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