Quote:
Originally Posted by ngarover
The sound seems to be coming from the area I circled in that diagram. at least, from the outside with the engine running that's the loudest point. Which is why I looked at it in the first place.
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It's absolutely possible for the tensioning rail or the tensioner (the items which you circled) to wear significantly. However, I cannot grasp any scenario where this wear would result in a noise that is once per every two revolutions.
Maybe others have an opinion.