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  1. #11
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    Quote Originally Posted by Raptor05121 View Post


    Engine: 90* Essex V6
    Displacement: 4.2L (256ci)
    Torque Specifications: 11-14 ft-lbs
    Spark Plug Gap: 0.54" (+/- .02")

    I'm getting ready to change my plugs. There doesn't seem to be enough metal for a gap that is over 1/2 inch. What plugs do you use?

  2. #12
    Super Moderator kozal01's Avatar
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    Quote Originally Posted by WickedGame View Post
    I'm getting ready to change my plugs. There doesn't seem to be enough metal for a gap that is over 1/2 inch. What plugs do you use?
    Im sure .54" is a typo, .054" is the gap.
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  3. #13
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    Quote Originally Posted by WickedGame View Post

    I'm getting ready to change my plugs. There doesn't seem to be enough metal for a gap that is over 1/2 inch. What plugs do you use?
    That's not in inches, it's in mm. The problem with the U.S. having its own system and then using the metric system on American cars lol. So it's 0.54mm

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    Quote Originally Posted by kozal01 View Post

    Im sure .54" is a typo, .054" is the gap.
    Or that too lol.

  4. #14
    Super Moderator kozal01's Avatar
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    Quote Originally Posted by RhinoZ24 View Post
    That's not in inches, it's in mm. The problem with the U.S. having its own system and then using the metric system on American cars lol. So it's 0.54mm

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    Or that too lol.
    Spark plug gap is measured in inches. The " after the number means inches. .54mm is only .021" which is not much of a gap at all.
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  5. #15
    Senior Member 5.0Flareside's Avatar
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    It's inches.. There was a 0 missing..


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  6. #16
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    Quote Originally Posted by kozal01 View Post

    Spark plug gap is measured in inches. The " after the number means inches. .54mm is only .021" which is not much of a gap at all.
    I didn't notice the " until after I posted lol, that's why I thought it was .54mm. I realized after you posted it had " so you are probably right. It's missing a 0 as in 0.054"

  7. #17
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    I had only two measuring wires - .050" & .054". I set the plug gap so the .050 would go thru easily and the .054 wouldn't go thru, giving me a gap of .052" to .053". Close enough, I suppose. The engine started and ran.

  8. #18
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    Does anyone know the 2008 4.2L V6 spark plug order? #5 is misfiring, and I don't have time today to change them all. Thanks.
    Last edited by mailman830; 10-28-2018 at 09:59 AM.

  9. #19
    Member Moosee1955's Avatar
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    #5 is passenger side furthest plug back. 3rd one closest to firewall. I'd pop in a new plug on that cylinder, and measure ohms on that spark plug wire, it may be bad, causing the miss. Too high a reading, or no reading at all indicates a bad wire. Let us know.

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