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I have a 1996 Escort LX with about 60000 miles on it. About a month ago I began experiencing an intermittent hiccup, went on to become an occasionally diagnosable #4 cylinder misfire, and as of yesterday it seems as though the #4 cylinder isn't firing at all. The only code I get is PO304, indicating #4 cylinder misfire. The car has lost a lot of power. Pulling the spark plug from the #4 cylinder reveals unburnt fuel (spark plug is wet). I have replaced all of the spark plugs and the spark plug wires.
If anyone is familiar with this problem, I would appreciate any help you could give. Thanks.
If anyone is familiar with this problem, I would appreciate any help you could give. Thanks.