Hi All,
I just bought myself an Audi 90 Quattro (10 valve) yesterday which has developped very noisey tappets while warming up. At times it's like someone has a small hammer banging on the rocker cover and very embarracing while driving down the street.
Once warmed up it quietens down and you can barely notice it. At tickover hot or cold the engine is quiet.

Is it just the hydraulic tappets? I've had a look on German Swedish & French but cannot seem to find new ones for my car. How big a job is it to replace them and will I also need a new cam?

Thanks in advance

Mike