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04 explorer 4.0

  1. J

    Spark plug issue

    I'm new to this site but need advice from fellow Ford owners since I seem to be getting 3 different answers from 3 different mechanics. I have a 2004 Explorer with the 4L V6. 145,000 km Can anyone tell me if the #4 spark plug sits more proud than the 5 & 6? Seems like a silly question...
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