Hi Dewar, thanks for the offer but it already had diagnostic tests and nothing came up. I did recently put some of that Wynns injector cleaner in along with half a tank of superior diesel and I am pretty gobsmacked as this seeks to have done the trick. No more diesel knock and my car is far more res...

Hi all. Really hoping someone can help before I have to take it to the dealer. I have booked it in but the earliest appointment is in 6 weeks! I have a 2011 1.5 Ntec diesel which has recently developed a couple of issues. First I noticed a diesel knocking sound at higher revs than ever beforr. No lo...