The tricycle's loose throttle buzzes, but the refueling doesn't ring.

The abnormal sound of the first throttle is generally caused by the damage of the central shaft of the transmission shaft or the damage of the cross shaft.

Second, the wheel bearing has abnormal sound.

Third, there is something wrong with the differential. Personally, I suggest you lift the car, put it in gear, fill up the throttle, release the throttle and judge where the problem is.

1. The carbon deposit on the accelerator is stuck, so clean the accelerator.

2. The supporting pin of the accelerator pedal is worn. Adding butter can solve the problem. If it doesn't work, replace it.

3. The accelerator cable is not installed correctly. If it is an electronic accelerator, please check the accelerator pedal mechanism and the accelerator pedal sensor.

4. Don't use the big throttle when starting empty. It is advisable to use a small throttle and a medium throttle when starting the load.

5. When starting, put the throttle in the right position, so that the parts are not easy to wear.

6. Avoid slamming on the throttle when driving. To increase the engine speed, you should slowly increase the throttle to make the engine speed rise steadily.