How often does the car nozzle clean Zhihu?

The cleaning cycle of automobile fuel nozzle is as follows: 1, which depends on the quality of fuel and the driving habits of the owner. There is no exact replacement time. Generally speaking, the engine is idling and the acceleration is insufficient, which is for reference only; 2. Suggestion: It is more appropriate to clean the throttle valve in general 10000km-20000km. If there is no abnormality, do not clean the nozzle, or clean it in 50000km-80000km; 3. Advantages: eliminating carbon emissions, improving air intake and injection accuracy, improving fuel efficiency, prolonging engine life, good engine sound, reducing fuel consumption and tail gas emission.