Audi Coupe knocking noise

[joonatan96]

Does this rubber thing look like its in good shape or i dont know if its rubber i cant reach there whit my hand but theres this knocing noise coming from my right side rear suspension i think i am not sure but it has started now kncoking alot in normal driving and specially in some bumps what could it be it must be spring related

[Nj]

Hi,
hard to say from such a photo but the knocks could be from a number of different things. It's not necessarily spring related. It could be a ball joint or bush (rubber thing that cushions two metal bits from bumping together). Basically there are quite a few suspension and steering components that could be doing this.
Can you jack the car up, get axel stands under non-moving parts (subframe, chassis jacking point etc) and then try to shake the wishbone, suspension strut etc? It might be easier to identify if you can look and listen at the same time.

Does the noise come only occasionally or is it regular, rhythmic etc? does it clunk, clunk, clunk.... like a drum? Is it when you turn one way or another? Only going over bumps? Under acceleration? Under braking?

When's it due for Katsastus? Those guys give the car a good shake to find these things so you could consider going for an early test, see what they tell you and then tae your time fixing it before you go back for a re-test.

[joonatan96]

i changed the bush thingys last october and the sound is pretty much like clonck after clonck pretty fast clonking like something would be shaking there fast and also it does it when standing still and driving and braking pretty much whole of the time i cant really lift the car up i dont have good place to do it but its pretty loud sounds it comes even from just little bumps also im trying to fix it before the katsastus

[Mikes2]

That's just the dust cover so won't be causing a knocking.

What's the liquid on the spring. Is the shock leaking ?

[joonatan96]

the photo was taken on a rainy day after a drive i think its just water from the road

[Nj]

aha! so if the engine is running and the car isn't driving you still hear the noise?
If that's the case I would say it could be something as simple as your exhaust rubbing on something (maybe a rubber hanger ring has broken) or if you have heat shield around the exhaust it could be bent out of place and bumping.

[joonatan96]

ill try to check if it makes noises or is there anything missing ill try to shake it around and look if i see something wrong there

[Nj]

Good luck
If it's making the noise while the car isn't driving, and it's coming from the rear then I can't help thinking it's the exhaust or heat shield vibrating. Is the car quattro? That would open up other possibilities related to the centre prop shaft or rear diff.

Shame you are so much further south than me (I'm in Kajaani).

[joonatan96]

Its fwd and yeah Kajaani is quite far away

[Nj]

well that makes life simple then It's definitely not the prop or rear diff!

If you don't have space/equipment to lift the car up you could try finding a suitable place (maybe at the weekend) that will let you see under the car quite well. Before I had a garage here i took my car to the local industrial park and found a loading bay where I was able to drive 2 wheels up a ramp. So I had the left side on the ground and the right side lifted up a bit. With the handbrake on and car in gear I was able to slide under and get a good look at whatever I was checking. If you're careful this could be a good option for you too, just so you can have a good look.

[joonatan96]

thanks i think i know a place then where i can do it same way as you did

[Nj]

just make sure you do it slowly

[joonatan96]

i did check the exhaust pipe wasnt it also i forgot to mention that it has squeaking noise attached to the cloncks so it sounds like metal rubbing to metal and yeah when i go to that city where i know that place is ill try to get better pics n check things