The following methods can be used to check whether the shock absorber is working well.
1. When the car is driving slowly and braking urgently, if the car vibrates violently, it means there is a problem with the shock absorber.
2. Press the bumper firmly and then release it. If the car jumps 2 or 3 times, it means that the shock absorber is working well.
3. Remove the shock absorber and stand it upright, and clamp the lower end connecting ring to the vise, and pull the shock absorber several times. At this time, there should be a stable resistance, and the resistance of pulling up (recovering) should be greater than the resistance of pressing down. If the resistance is unstable or there is no resistance, it may be due to lack of oil inside the shock absorber or damage to the valve parts. Should be repaired or replaced parts.
4. Make the car stop after driving 10km on the road with poor road conditions and touch the shock absorber shell with your hands. If it is not hot enough, it means that there is no resistance inside the shock absorber and the shock absorber does not work. At this time, you can add appropriate lubricating oil, and then carry out the test. If the shell heats up, it means that the shock absorber is short of oil, and enough oil should be added; otherwise, the shock absorber has failed.