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Thread: Spark plug gap

  1. #1
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    Spark plug gap

    I'm getting ready to replace the plugs in both of my Durango's and got the Autolite 3923's for the 99 with the 5.9. what's the gap suppose to be set at? I got Champion Copper #439's for the 4.7, does anyone know what the gap is on the 01 with the 4.7? I'm wanting to say its .40 for both, but I just want to clarify that.
    2001 Dodge Dakota Quad cab 4.7 131k
    2000 Buick Century 3.1 3100 w/ 124k

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  3. #2
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    If I remember correctly, the 5.9 gets gapped to .044.

    4.7, I have no idea?? Does a 4.7 even have spark plugs.


  4. #3
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    According to the FSM it's .040.
    Hanson front bumper, Kennesaw rear bumper, Ranch9000xl's w/ remote, Detroit Locker, lots of other goodies

  5. #4
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    +1

    .040

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    +2 .040 for all of them.
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    Thanks!

    could I use a .40 feeler gauge for accuracy?
    2001 Dodge Dakota Quad cab 4.7 131k
    2000 Buick Century 3.1 3100 w/ 124k

  8. #7
    Administrator IndyDurango's Avatar
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    Anything .040 works just fine.

    .040 is .040 after all.

  9. #8
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    Thanks! Got the Autolites put in today.
    2001 Dodge Dakota Quad cab 4.7 131k
    2000 Buick Century 3.1 3100 w/ 124k

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