F-150 Spark Problem

Discussion in 'Trucks and Trailers' started by gibsonsg311, Mar 8, 2007.

  1. gibsonsg311

    gibsonsg311 LawnSite Member
    Messages: 63

    Im no mechanic, but my engine started "missing" a few days ago.I have a 97 F-150 with a 4.6L My dads friend put new spark plugs in about 2 months ago, but he thought the wires were bad. Does any body know any online tutorials for puting new spark plug wires in. Any help would be greatly appreciated.
  2. stevesmowing

    stevesmowing LawnSite Senior Member
    Messages: 847

    If they havn't been replaced before its pretty straight forward. The wires are even numbered as to what cylinder they go to. I had a problem after I replaced my plugs and wires of water getting down in the boot on the 3rd cylinder from the front on the left side. Is it tripping a check engine light? If it doesn't wait another day and see if it does. Once you find that out check the plug and wire on that cylinder. My plug appeared to be fine but the ceramic part had the smallest hairline crack ever. I put some high temp. silicon around the boot when I installed it again and its been about a year and no problems since.
  3. Grassmechanic

    Grassmechanic LawnSite Silver Member
    Messages: 2,697

    Remove 1 and replace it with a new one, one at a time. Pretty straight forward.
  4. TXNSLighting

    TXNSLighting LawnSite Fanatic
    from DFW, TX
    Messages: 6,464

    thats the easiest thing to do on an engine. take one off put the new one in its place
  5. gibsonsg311

    gibsonsg311 LawnSite Member
    Messages: 63

    Yeah i took alook at them and they look pretty straight forward, I just didnlt know what i was getting into. Ill pick up some new ones and try it. It did trip the check engine light yesturday.thanks
  6. lawnspecialties

    lawnspecialties LawnSite Silver Member
    Messages: 2,524

    Does that 4.6L have coil packs? Not sure on a '97.
  7. xcopterdoc

    xcopterdoc LawnSite Senior Member
    Messages: 752

    The 4.6 on a 97 is a non coil pack engine. They are a real PITA to replace, but not that bad. Buy good ones or you will hate life and be replacing them again in a short time. Be aware of an intake coolant leak into the spark plug wells when you pull the spark plug boots out.
  8. gibsonsg311

    gibsonsg311 LawnSite Member
    Messages: 63

    alright ill try not to leak any fluids. Im going to pick up new wires today found a kit for the 4.6L for $78

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