What year is your 206??
Did he fit an entire system?? Including the cat???
If not, this is where ALL of my knocking problems started??
Basically the OEM GTI exhaust system on a 2000/2001 onwards is one piece (i.e. back, middle, and top/cat section are one piece). I'm not sure about the earlier ones, but could be the same.
You are not supposed to change individual sections, so if your back box needs changing you have to change the entire system!
However, lots of places cut off the faulty section and replace it with pattern or aftermarket sections. These vary rarely fit properly and leaks and knocks are common.
Even entire aftermarket systems rarely fit properly and need to be twisted and adjusted to get them on.
It took me three replacement exhausts before my system was leak-free, but even then I still had knocking present. In the end I gave up and part-ex'd it.
Its a 99 and the exhaust system is from the cat back.
Not sure when the knocking started or how long ago.
I bought it with all manor of knocking and shaking.
I replaced the clutch after it let go (I never paid any attention to the fly wheel at the time) and was greeted with this
That helped but still had the knocking, so replaced all engine mounts (thats when the drive shaft was replaced), drop link bushes and some others.
I was back over the receipts I got with it and noticed it had over 8 drop link bushes in it life, which seems a bit excessive.
The last thing I did was the drop link bushes and ARB bushes, thats when I had a look at the exhaust and noticed it was not fitting right and a bit shaky. I replaced all of the exhaust rubber mounts as well.
Still got the ****** knocking and can't see where the exhaust is hitting, if it the exhaust.
I have said to the misses about selling it and moving on but she likes it to much and said if we do sell it on she wants to get another Discovery. No way is that happening. We had one and it fell apart. lol
EDIT:=- The exhaust is a long life stainless steel fitted by them a several of years ago.
The car done just shy of 110K when we bought it last year.