What Causes the Abnormal Noise When the Front Shock Absorber is Compressed?

[DiGraham]

The reasons for abnormal noise when the front shock absorber is compressed are as follows: Shock Absorber Malfunction: This is caused by the shock absorber colliding with the leaf spring, frame, or axle, damaged or detached rubber pads, deformation of the shock absorber dust cover, or insufficient fluid. Broken Shock Absorber Top Rubber: This indicates that the noise is caused by the front lower control arm rubber or a broken shock absorber top rubber, leading to a creaking sound from the front shock absorber. Function of the Shock Absorber: In the vehicle suspension system, the shock absorber always works in conjunction with the spring. When one corner of the vehicle body is compressed, it is actually the spring that is being compressed, while the corresponding control arm swings. When the body is released, the spring force causes the body to rebound, and the shock absorber dampens this rebound, helping the body stabilize after the rebound.

[LeAniyah]

I've been driving for over a decade and often encountered the issue of front suspension squeaking when compressed. Most of the time, it's due to worn-out or aged rubber bushings, which are supposed to absorb shocks but become dry and hardened, causing squeaks when compressed. Alternatively, the internal seals of the shock absorber might be damaged, and with oil leakage, it can't function smoothly, resulting in a thumping sound when compressed. Loose mounting bolts or rusted and deformed suspension springs could also be the culprits. Additionally, accumulated dust and sand at the joints can cause friction noises. These abnormal sounds are no small matter; neglecting them can lead to a loose suspension, affecting steering stability and braking performance, and causing faster tire wear. I recommend not tinkering with it yourself but instead taking it to a professional repair shop to inspect the components and replace them if necessary.

[EverlyLee]

As someone who loves tinkering with cars, I'm very familiar with the causes of shock absorber noise. Loud noises when compressing the suspension mainly indicate issues with shock components: first, wear and oil leakage in the hydraulic piston causing abnormal damping travel; second, dry or cracked rubber bushings increasing friction during vibration; third, loose mounting bolts creating knocking sounds under pressure. Additionally, fatigued or deformed springs can also produce abnormal noises. Regular checks for oil stains and wheel wobble can provide initial diagnosis. Leaving these issues unfixed not only becomes annoying but also jeopardizes the entire suspension system's health.

[SanHaley]

I've encountered situations where the shock absorber makes noise under compression. Simply put, it could be due to worn-out bushings that have cracked, causing friction noise when under stress. Or the shock absorber might be leaking oil and unable to extend/retract properly, resulting in a thumping sound. Check if the mounting components are loose, and cleaning dust might provide temporary relief. If the abnormal noise becomes significant, it's best to get it repaired to avoid unstable driving conditions.