Is there a buzz when the Mercedes-Benz C200 cold car is idling?

1, if you don't pay attention to maintenance, it may be that the machine has too much carbon (too much carbon in the engine, too much carbon in the throttle, too much carbon in the spark plug, etc.). ), so just go to the repair shop and clean it. 2. It is also possible that the filter is not good (the most common is that the air filter is too dirty) and go to the repair shop for cleaning or replacement. 3. Of course, the purity of the automobile gasoline you use is not enough (because gasoline with insufficient purity is easy to form carbon deposits in the engine, and 90 # gasoline is not as pure as 93 # gasoline). 4. If the automobile oil (automobile lubricating oil) is not changed in time or the automobile oil is inferior, such problems will also occur. 5. If it is the sound from the transmission shaft, it may be that the ten bytes of the transmission shaft are worn and damaged due to lack of oil. You can remove the transmission shaft and check it.