What Causes the Abnormal Noise When the Car Goes Over a Bump?
1 Answers
When going over a bump, the abnormal noise heard is a metallic sound. If you fail to avoid potholes in time, the shock absorber will rapidly compress. When the compression exceeds its limit, the shock absorber will bottom out, producing a sound—this is the metallic noise from hitting the buffer block. Below are the steps to take after hearing such noise: 1. Check for Oil Leaks Under the Car: Park and inspect the vehicle. If you notice oil leaking from under the car, it may be due to a punctured oil pan. In this case, turn off the engine immediately to minimize damage. The oil pan stores the engine oil, which is essential for lubrication and cooling. Failure to address this issue promptly may lead to engine seizure or even complete failure. Then, call for a tow truck and wait for assistance. 2. Brake System and Suspension System: The brake and suspension systems should also be inspected. If severe oil leakage is observed from the shock absorber after impact, stop driving immediately. The primary reason is to prevent the shock absorber oil from contaminating the brake system, which could significantly reduce braking performance and compromise safety. For the brake system, focus on inspecting the brake caliper (also known as the brake piston), which is the closest brake component to the chassis. During inspection, check for any dripping brake fluid and test the brake pedal to see if the effective braking distance has shortened or if there are any abnormal noises. If any of these issues are present, it is advisable to arrange for a tow.
