1995 Mercury Tracer running on three cylinders

1995 MERCURY VILLAGER
118,000 MILES • 4 CYL • FWD • AUTOMATIC
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1995 Mercury Tracer mileage: 118,000. The engine is running on three cylinders. When I remove, plugs the number three spark plug end was burned off. This happened twice in about three hundred miles.
Nov 17, 2010 at 10:36 PM
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Check the fuel injector for the number three cylinder; it may be partially plugged causing a very lean mixture in that cylinder. A lean mixture will burn extremely hot burning the end off the spark plug.
Nov 17, 2010 at 10:47 PM