What Causes the Noise When Pressing the Front Shock Absorber?
2 Answers
The reasons for noise when pressing the front shock absorber are as follows: Shock Absorber Malfunction: This is caused by collisions between the shock absorber and the leaf spring, frame, or axle, damage or detachment of rubber pads, deformation of the shock absorber dust cover, or insufficient fluid. Broken Shock Absorber Top Mount: This indicates that the noise is caused by the front lower control arm bushings or a broken shock absorber top mount, leading to creaking sounds from the front shock absorber. Function of the Shock Absorber: In a car's suspension system, the shock absorber always works in conjunction with the spring. When one corner of the car body is pressed down, it is actually the spring that compresses, while the corresponding control arm swings. When the car body is released, the spring force causes the body to rebound. At this point, the shock absorber dampens the rebound of the spring, helping the car body stabilize after rebounding.
I've been driving for over a decade and have encountered several instances where the front suspension squeaks when compressed. This is usually caused by aging suspension components, such as worn shock absorber bushings that create friction noise under load, or insufficient spring tension leading to mutual collisions. If the hydraulic oil in the shock absorber cylinder leaks completely, internal piston wear can also produce abnormal noises when compressed. Additionally, lack of lubrication or rust-induced stiffness in control arm or stabilizer bar bushings are common causes. I remember my old car had this issue – it started with slight noises that I ignored, but later the handling deteriorated over bumpy roads, nearly causing an accident. I recommend getting it checked early. You can visit a repair shop and have a mechanic lift the wheel with a jack to manually compress it a few times and identify the noise source, avoiding expensive full assembly replacements. Regular suspension maintenance, like lubricating bushings annually, can effectively extend its lifespan.
