Is it necessary for 4s shop to suggest cleaning the throttle?

Usually, everyone goes to the 4S repair shop for maintenance, and the mechanic inevitably advises everyone to clean the throttle. The mechanic's statement is roughly like this: the accelerator will produce carbon deposit if the car is driven for a long time. If it is not cleaned in time, it may lead to engine jitter and affect the throttle opening. When many drivers hear these questions, they immediately nod to clean the throttle, but in fact, cleaning the throttle is not often done. Generally speaking, a car can be cleaned once when it travels 20,000 kilometers, but when it is less than 20,000 kilometers, there is no abnormality in the vehicle, so it is generally not recommended to clean the throttle.

Of course, there are still many car owners who are very keen. When they hear the mechanic ask them to clean the throttle, they will immediately refuse. Car owners know very well that this is the reason why 4S stores let them pay. Some car owners have seen mechanics clean the throttle. Usually they just spray a bottle of accelerator cleaner on the accelerator and wipe it with a rag after spraying, even if it is cleaned. When they saw this cleaning method, they obviously felt that they were cheating money, as if they had no technical content. Hope to adopt, thank you!