What Causes the Abnormal Noise When Passing Over a Bump at 40 mph?

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Here is a detailed introduction to the abnormal noise when passing over a bump at 40 mph: 1. Shock absorber issues: This can be caused by collisions between the shock absorber and the leaf spring, frame, or axle, as well as damaged or detached rubber pads, deformation of the shock absorber dust cover, or insufficient fluid. 2. Function of the shock absorber: The shock absorber is a wear-prone component during vehicle use. Its performance directly affects the smoothness of the ride and the lifespan of other mechanical parts. 3. Check for oil leaks: Inspect the shock absorber for oil leaks or signs of old leaks. If the oil seal gasket or sealing gasket is cracked or damaged, or if the oil reservoir cap nut is loose, the oil seal or sealing gasket may be faulty and should be replaced with new sealing components.