How many kilometers does it take to clean the nozzle?

Generally, the throttle body is cleaned every 20,000 kilometers.

As for the nozzle, there is generally no problem. Just change the gasoline compartment every time you clean the throttle body. There is little chance that there is something wrong with the nozzle. As long as you do maintenance on time, press the change gasoline box.

Extended data:

fuel nozzle

It is a normally closed valve (normally closed valve means that the valve is always closed when there is no control signal input; When there is no control signal input, the normally open valve is always open. The valve needle moves up and down to control the opening and closing of the valve.

When the ECU sends the fuel injection instruction, its voltage signal will make the current flow through the coil in the fuel injector, generate a magnetic field to attract the valve needle and open the valve, so that the fuel can be ejected from the fuel injection hole. The biggest advantage of jet fuel supply is that the control of fuel supply is very accurate, so that the engine can have the correct air-fuel ratio in any state, which not only keeps the engine running smoothly, but also conforms to the norms of environmental protection laws and regulations.

References:

Baidu encyclopedia nozzle