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Old 06-25-2021, 11:57 AM   #16
katy
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Join Date: Jun 2015
Location: Red Deer, Alberta
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Default Re: Mystery Engine Knock

Quote:
Originally Posted by chrs1961815 View Post
UPDATE:
Ran the engine with a modified valve cover that has the top half cut off to see what the valves are doing. One of the valves on cylinder #3 is sticky and was closing hard. Time to pull the head and take it apart.
I would suggest that you run some MMO or other top end lube for a while before pulling the head.
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