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Re: Engine Knocking help please.
I think some of the folks here will attest to this one....You might check you spark plugs.. if one is loose the engine makes a popping/knocking noise. I know you said that your valve cover was off, which implies you know the right end of a wrench, but i had a loose plug and it made get that sinking feeling in my gut.
An engine speed dependent knock is bad. connecting rod bearing.....
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