OK, I am already depressed by the thought of the cost of this, but any insights may help me.
So, I noticed a lack of power when I put my foot down, the car seemed to take a bit to kick in. Turbo cleaner in a full tank...
I had also noticed a tapping noise when starting cold, goes when warm. Checked the oil, all ok.
Then I scanned the car and there are readings well out of synch with others on injector 5. So injector cleaner in...
Now, the car started misfiring when I started it up. On idle it juddered - 1.5k revs all fine. Read up a little and realised you have to sit with fairly high revs for a bit.
By now I had booked into garage, as they have a 2 week lead at the moment.
Started it yesterday and sat with high revs, all seems fine.
Started it today to drive to garage, all fine - but the tapping is back (it's a cold day in Scotland today), and by the time I had drive 3 miles to the garage - all is well - I could accelerate well...
However, the garage say they no longer "do engine work" - it would be sent to Audi or to Border Engines in Berwick should they find a problem.
So - any ideas? I am dreading the cost of replacement injectors, or even worse a piston slap issue, or timing chain. It's at 116k miles, so maybe it's that.
Bah