Hi all new here looking for some advise! I spend a lot of my spare time fixing broken Audi's!

My most recent purchase was a 2008 2.0 TDI sportback sline A3 with a hyrolocked engine. I have been rebuilding the engine for the past couple of weeks with new pistons, Conrods and shells ect. I have recently put it in the car and have it running no problem.

The problems seem to start when the engine warms up, it's starts to judder and smokes slightly. I've had it on vcds and set the torsion so it's definitely not that. The only thing I did notice was the injector readings.

1 -0.34
2 +1.56
3 -0.24
4 -0.45

Obviously number 2 seems way off but I read somewhere the tolerance is + or - 2.8?

Do you guys thing this could be my problem? I don't really want to spend the cash on an expensive injector just to have the same problem. I've swaped them over and the problem moves with it to rule anything else out!

Cheers Dave