Have an A4 Avant 130pd tdi 2004 Reg.
I've always had a problem with lumpy starting and the car chucking out quite a bit of smoke on start up. Normally worse on Colder says.
Yesterday upon starting the car, I could hear a tapping/knocking noise. Appears to be coming from the front.
I could hear it without the bonnet open. It's irregular. Seems to go away once warm, say 2-3 mins after starting but then occasionally happens. Don't think it got worse or faster upon revving the car as far as I could tell.
The engine rocks/shakes quite a lot and always has done.
Anyone got any ideas? Alternator Pulley and CamBelt all done a while back. It taps heavily when pulling away heavily, but this might be just due to the oil getting round the system I guess.
Anyone got any ideas?