I had a service yesterday at a main dealer and when I got the car back I noticed that when the plugs were changed,a small black box(what looks like to be some sort of capacitar),has been damaged.It is wired in to the main loom which goes to the block on top of the plugs.It was bolted on to the plug block by a metal bracket,but this part has been riped out and now it has been cable tied to main loom itself.
The car is running fine and there simes to be no other problems,but,what is this part and should it be earthed through the metal bracket that was removed.
The car is running fine and there simes to be no other problems,but,what is this part and should it be earthed through the metal bracket that was removed.