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Engine knock when in idle quiets down when I give it gas.
2 Replies
Engine knock, or pinging, occurs when a separate pocket of air-fuel mixture ignites after the spark has ignited the air-fuel mixture within the combustion chamber. Engine knock can be prevented using higher octane fuels, retarding ignition timing, or by using a lower compression ratio, among other solutions. I suggest start with having the ignition system inspected.