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Yes, plugs, wires and carbon deposits are suspects. Easy enough to remedy. Seafoam from your NAPA dealer for the carbon deposits. Then examine the plug wires for burns or evidence of a short. Cheaper plug wire sets are a compromise since the lengths aren't exact and any contact with the exhaust manifold will shorten their life. If you haven't changed the plugs in awhile, now might be a good time to put in a set of platinum plugs.
 
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