Diagnosis of noises

When replacing a new shock absorber to the old mounting kits and steering and suspension components, one might experience unusual noises.
One may not experience these noises with old shocks absorbers with weak damping force. This is because the additional damping force of the new shock absorber on worn out components create noises which was not there with old shock absorbers.
To identify such noises you should check the mounting insulators, ball joints and suspension bushes.
Unusual noises can come from the steering system such as rack ends, tie rod ends and rack bushes.
Weak stabi-links and stabilizer-bar bushes could also create noises.
In order to cancel out these unusual noises it is important to check and replace worn out/weak components while replacing new shock absorbers with KYB genuine steering and suspension components.

How to identify some suspension noises on visual inspection

If the vehicle suspension system is not washed and is dusty, if the bushes have turned black colour without dust, this indicates excessive movement that can create noise.
When metal parts on the side of bushes are polished, it indicates an excessive movement in bushes that create noise.

Foreign objects such as loose jack, wheel spanner, a bottle or an umbrella with a metal ring in the back might develop noises when riding. It is important to eliminate such noises before you go for expensive repairs.
Unattended spanner or a loose battery in the engine compartment will create noise.
The rear door of 5 door vehicles could create noise.
Noises are common on vehicles with spare wheel mounted rear doors.
Worn out break caliper pins, wheel bearing play will develop noises.
Replacing shock absorbers and suspension components will not tackle such non-related noises which could lead to expensive suspension repairs due to misdiagnosis.