Question about 2005 Ford Fusion
That pinging you hear is because the gas in the combustion chamber is not burning uniformly. This is caused by using low octane fuel or incorrect ignition timing. Switch to a higher octane fuel and if that does not solve the problem have the ignition timing checked. It may also occur because the head has been skimmed or the engine modified to get a higher compression ratio
Posted on Jul 21, 2010
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Posted on Jan 02, 2017
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