I fit a new SKF t.belt kit and water pump on my A3 1.8t AGU and I have done roughly 3K miles since and it appears that the new tensioner has failed already ! There looks to be a dark greasy substance on the tensioner and I could probably push the belt off the cam sprocket quite easily ! My question is has anyone else heard of or experienced this happen with a new tensioner ? And I suppose I won't be able to buy a new tensioner by itself ? Any help much appreciated. Regards Ben.