What causes the clunking sound when starting the car?
1 Answers
The reasons for a clunking sound when the car starts are as follows: 1. Faulty lower control arm or worn inner CV joint, manifested as abnormal noises when turning or starting, and clunking when suddenly accelerating after releasing the throttle. In severe cases, it may lead to axle breakage. 2. Possible causes include clutch failure, transmission issues, lower control arm problems, or inner CV joint wear. It is recommended to visit a local 4S dealership for inspection and repair. Additional information: 1. Various vibrations from different mechanisms during car operation can produce sounds of different natures. However, not all sounds indicate a malfunction. To avoid unnecessary disassembly, it is essential to distinguish between normal and abnormal sounds. Normal operational sounds include engine surface noise, gear impact noise during gear shifts, intake and exhaust sounds from gas-operated sources, and gear meshing noise. 2. Abnormal sounds (or noises) can be categorized based on their impact on vehicle performance: minor noises, general noises, and severe noises. Minor noises, such as sparking from high-voltage electrical leakage or slight looseness in rolling bearings, are generally low in volume and do not significantly worsen over time. These issues typically do not require immediate repair for the car to continue normal operation.
