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Possible engine knock? Any ideas?

377 Views 1 Reply 2 Participants Last post by  racer70
I have a 92 gc8 Subaru WRX with 166xxx kms owned car for 4 months now engine oil was fresh when I got it and levels have always been good. At idle I can hear a faint deep knocking sound towards the back of the engine bay. I only noticed this 2 days ago and have to pay really close attention to notice it. Do engine knock get worse over time and start out small like this? Any help appreciated
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Remove the Oil filter, cut it open, and look for metal. If metal, check with a magnet. Bearing material is non-magnetic.

Edit: More here:
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