rear suspension damper knocking 996 c6

[geno melici]

hi there was wondering if anyone can shine a light here

i have a 2000 c4 coupe

wen i bought it had yellow upgraded bilstien shocks on the rear.... are they gas ? do they need regassing? can it be done?

recently i have heard a knocking from the rear right hand side when going over bumps in the road

i think the damping may have gone or could it be bushes ? i have no idea when i push down on the rear end there seams to be still some damping on the rebound.

it has been -10 c temp this week with snow and ice - could this be the cause of the problem?

thanks for all the help in advance guys :renntech: :renntech: :renntech:

[Loren]

Yes, Bilstein are gas shocks. If they leak or fail they need to be replaced.

Cold weather definitely will affect shock rebound and performance.

Your car is 10 years old this so further inspection of the shocks (for leaks, or deformed mounts/bushes) should be done.

[geno melici]

Yes, Bilstein are gas shocks. If they leak or fail they need to be replaced.

Cold weather definitely will affect shock rebound and performance.

Your car is 10 years old this so further inspection of the shocks (for leaks, or deformed mounts/bushes) should be done.

cheers loren hoped you would pick up on this

quick question

the shocks were only fitted to the car brand new around 12 months ago. i have just found the invoice.

so cant see age being the issue.

will the cold have caused damage to the shocks or will they just preform bad because of the cold and be ok again when the weather gets better?

how will the cold effect them?

are they easily replaced if i need a new shock or is it a big job ?

[Loren]

Just like your tires shocks will warm up with driving (unless it is really really cold).

Replacing rear shocks are pretty easy. The fronts will require a coil spring compressor and an alignment afterward.

[geno melici]

Just like your tires shocks will warm up with driving (unless it is really really cold).

Replacing rear shocks are pretty easy. The fronts will require a coil spring compressor and an alignment afterward.

hi loren

i think it may need replacing is there or has anyone got a rear shock replacement guide DIY ?

[Loren]

Just like your tires shocks will warm up with driving (unless it is really really cold).

Replacing rear shocks are pretty easy. The fronts will require a coil spring compressor and an alignment afterward.

hi loren

i think it may need replacing is there or has anyone got a rear shock replacement guide DIY ?

There is more info here than you need but have a look at the RoW M030 Suspension Install