What is the reason why the refueling buzzer doesn't sound?

The reasons why the fuel will not ring when the fuel is humming are: 1, the belt of the automobile accessory wheel is too loose, which leads to the increase of the full load of the fuel filler door and the abnormal belt; 2. The car throttle is blocked due to carbon deposition, and the idle speed control valve and throttle are too dirty; 3. There is a mixture of carbon deposit and engine oil at the air inlet of the automobile engine, which causes the refueling door to hum. Solution: 1, check the generator belt, compressor belt, booster pump belt, etc. If it is loose, replace or tighten it; 2. Check the throttle of the car. If it is dirty, it needs to be cleaned and matched; 3. Clean the engine oil mixture and carbon deposit in the intake port, and use special intake port cleaning agent; 4. Check whether the accelerator pedal spring is loose or tired. If so, replace it as soon as possible.