Ok so for no apparent reason i decided that it was imperative that i strip down my diff on my C4.1 (which was operating fine by the way) and clean out rebuild etc!
Having done the said job i found that i was getting a barking type of sound while running the car, no problem i thought as i had had this a bit back and was solved by tightening the diff a bit. Problem im having is that this time i tightened it no change, tightened a bit more no change until i was totally locked up couple of squirts on the throttle and the problem returns and when checking the diff screw it has loosened again, so retighten and start process again
Why did i mess with it? any ideas why it wont stay tight?
Any help appreciated!