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Pontiac Bonneville Engine Knock
What could I do to get rid of this knock?
I'm afraid to do a 0-60 test for fear of this knock destroying my engine.
Could it be a valve lifter?
Could it be a stuck valve?
Any help would greatly be appreciated!
New head and water pump put in in 2005
Sparkplugs, wires, pcv valve, airfilter all replaced less than 300 miles ago.