A: 1. The front wheel of a car always has the sound of "thump" when the car starts and accelerates at the moment.
2. When you stop, brake a little harder and there will be a thump.
3 Abnormal noise is obvious when running slowly,however when running fast ,it will not heard. on the flat asphalt road often as quiet as before.
4.When driving at a low speed, the front of the vehicle will hear the sound of "goo goo" and "ga ga".
5 when driving on uneven roads, there will be "gurgle gurgle" or "gurgle gurgle" sound,
6. In a continuous bad road, bumpy road travel, the front of the vehicle will have a very obvious "gurgle”sound.Under the condition of maintaining the same direction, there will be abnormal noise as long as the road surface is uneven.