I have a bit of an issue with my 2005 2.0tdi Avant.
I have had power and uneven driving problems.
I took the car to my independent dealer who changed the flywheel and clutch and also said that injector 4 was misfiring and not within specification.
The fly wheel change did nothing really to change the problem.
I then contacted Audi uk as some people here have said the injector is a known problem, they agreed to change them as a good will gesture but I had to take the car to an Audi dealer for verification.
I have since taken it to 2 Audi dealers who have said there is no problem (surprisingly enough) and back to the independent dealer who are adamant the injector is at fault.
I have a copy of VAG and a cable, does anyone know how I diagonse an injector fault so I can have a look myself before I call Audi uk again