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kt45 · 05-30-2019, 12:48 AM

If it increases with rpms and it makes noise at idle, pop the hood and listen. If you can tell which side its coming from, left or right, then its valve noise. If you cant it could be rod knock.

From my experience I had both happen at the same time.

05-30-2019, 12:48 AM	#3
kt45 Member Join Date: Mar 2016 Drives: BRZ 2013 MT Location: Arizona Posts: 37 Thanks: 3 Thanked 9 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	If it increases with rpms and it makes noise at idle, pop the hood and listen. If you can tell which side its coming from, left or right, then its valve noise. If you cant it could be rod knock. From my experience I had both happen at the same time.