Yes, replacing the spark plugs may help, but there may be a reason for the plug to be that bad. If you do not have over 100k miles, it should not be cooked, as you say. Fuel filter and air filter may not help. Need to find the cause for the plug problem. Have had a some of these engines with valve problems causing rough idle and burning spark plugs. Carbon in the valve causes compression problem in the effected cylinder.
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Sunday, April 25th, 2010 AT 8:01 PM