The main function of the shock absorber is to reduce the vibration of the spring, and then reduce the vibration of the car. The shock absorption system of a car consists of a spring and a shock absorber, which bears the weight of the car and absorbs the bumps of the road surface.

When the car is upside down, the body will jump up and down, and the spring and shock absorption absorb downforce when pressed down, and the spring must bounce off after being compressed, and when it bounces, the spring is pulled by the shock absorber, only bounce open, do not be stretched again due to body inertia, so that it will beat repeatedly.

With the effect of shock absorption, the spring will not jump too many times, and the comfort of the car will become better.

So if you drive over speed bumps or potholes, the car jumps up and down many times to restore stability, and small bumps will also shake up and down, like a boat, indicating that the shock absorber is damaged and needs to be checked and replaced as appropriate.

In addition to judging from the feeling of riding, we can also judge by the appearance state of the shock absorber.