Why does the new Excelle make a clunking sound when braking?
1 Answers
Braking noise may be caused by new car break-in and brake discs. The specific reasons are as follows: 1. New car break-in: Since new cars in inventory have been parked for a long time, and brake discs are prone to rust, there will be noise when braking during the break-in period of a new car. After running more than 200 kilometers, the noise will become less obvious and braking will be more powerful. 2. Replacement of new friction pads or new brake discs: If workers do not chamfer or apply noise-reducing paste when replacing new friction pads, it is easy to cause braking noise. After replacing new brake discs, they cannot immediately break in well with the friction pads, resulting in noise. 3. Hard foreign objects entering the gap between the brake pads and brake discs: After wading through water or driving on muddy roads, hard sand and stones may enter the gap of the braking mechanism, causing jamming when the braking system is working. If they enter the gap of the brake disc, it will cause braking noise. 4. Loose braking mechanism: A common issue is that the brake caliper is not tightened to the specified torque during installation. When braking, if the brake pads are not fixed properly and do not fit tightly with the brake disc, noise will occur. 5. ABS intervention under special circumstances: Usually during emergency braking, when the driver brakes sharply, the ABS system slightly releases the brake and then clamps the brake disc again to prevent wheel lock-up, effectively reducing the risk of skidding. Therefore, the wheel may produce brief noise under high-frequency lock-up and release conditions.
