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Plug number 5 misfiring - Taurus Ford Cars & Trucks

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Put in a new spark plug set (might as well do all of them) and new spark plug wires. They're wear items and eventually have to be changed, so now's a good time. You might also change the cap and rotor - they're what trigger the plugs to fire. If they're corroded or worn down (which does happen) it will cause problems. I'd lean more toward the plug and wire though - if the cap and rotor are worn, I'd expect that all the cylinders would be firing funny.

Posted on Aug 02, 2008

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