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Diagnosing weird sound from engine bay
The sound is a low level clatter. Audible when at idle and low rpm in first gear. I think it only becomes inaudible because it is drowned out by normal engine sounds. It occurs to me now that it could be a failing water pump bearing. Does this seem likely if there are no coolant leaks? My first theory was a chain tensioner..... do they make a noise if failing?
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