hello, i just need help with reducing engine noise in my 1987 240dl wagen. There is alot more engine noise then there used to when my parents had teh car and it seems like that most of the noise comes from the timing belt. How can I tell if my timing belt is new? i don't want to get a new timing belt and find out that the problem lies elsewhere. I and 99 percent sure that the noise is coming from the area near the timing belt or near the front of the engine compartment. COuld it be the really old pulleys? I would appreciate any help at all.