I have had my coilovers fitted while I was away on holiday, I have got my car back and have a loud clunk/knock sound from rear as driving along whenever I hit small bumps etc.
I think it could be one of 2 things:
1)Top mounts gone - although the garage says they seemed fine before they were re-installed
2)Bump Stops - I think they may have put the originals in as well as the new ones from coilovers and it is bottoming out on them.
I was planning and have a look today but do not have a garage and have torrential rain and high winds.. not fun!
They will look at it for me but earliest is next saturday
anyone got any other suggestions?