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Possible valve cover gaskets are leaking oil onto the plugs and the oil is getting into the cylinder. The oil can also short the plug wire and damage the plug wire causing the check engine light to light.

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โˆ™ 2005-11-08 12:34:00
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Q: What are possible causes of random misfire with check engine light in 95 Millenia when wires cap plugs rotors already replaced and vehicle still runs rough?
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