The front wheel of the car is broken and it is knocking.

The car made a thumping noise when crossing the bad road, which may be caused by the looseness of the left front mechanism and the damage of parts. You can check the appearance of the car first, whether it is the left headlight assembly, fender, bumper, wheel cover and so on. Is it loose? After confirmation, check the tire condition and appearance for damage. You can choose to do dynamic balance to eliminate tire failure.

If you go to the store for maintenance, you can lift the vehicle first, and manually check whether the tires are loose, whether the gap between the ball head of the left front wheel steering mechanism and the tie rod is up to standard, whether the lower arm is damaged or deformed, whether the left front shock absorber leaks oil or fails, and whether the shaft dust cover sealing ring is damaged or leaked. Basically, after these parts are discharged one by one, you can clearly know the location of the fault, and it will be more secure to adopt the method of direct assembly and replacement.

When the vehicle encounters abnormal noise while driving, it is necessary to reduce the speed first. Abnormal noise is mostly caused by * * * vibration, and high-speed driving will increase the burden on the vehicle, especially the part that makes abnormal noise. Try to control the direction, pull over, and don't continue driving when there is an uncertain fault, so as to avoid losing control of the vehicle in an emergency. For abnormal noise that does not involve safety, the noise reduction method can be adopted. The noise emitted by cars can be reduced by installing sound insulation panels on doors, rubber strips and engine compartments, and choosing comfortable and quiet tires.