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Thread: Spark plug gap

  1. #1
    Durango Jedi
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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.
    2003 Dodge Durango 4.7 4x4
    2004 Dodge Ram 1500 5.7 Hemi
    2014 Toyota Camry SE
    2000 Buick Century

  2. #2
    Durango Expert
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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.


  3. #3
    Durango Jedi Master
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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

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    Administrator IndyDurango's Avatar
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    +1

    .040

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  6. #6
    Durango Jedi
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    Thanks!

    could I use a .40 feeler gauge for accuracy?
    2003 Dodge Durango 4.7 4x4
    2004 Dodge Ram 1500 5.7 Hemi
    2014 Toyota Camry SE
    2000 Buick Century

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

    .040 is .040 after all.

  8. #8
    Durango Jedi
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    Thanks! Got the Autolites put in today.
    2003 Dodge Durango 4.7 4x4
    2004 Dodge Ram 1500 5.7 Hemi
    2014 Toyota Camry SE
    2000 Buick Century

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