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Detonation - Colder sparkplug?

Discussion in 'Technical Chat' started by XC4ME, May 28, 2009.

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  1. May 28, 2009 at 10:18 PM
    #1
    XC4ME

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    XC4ME [OP] Well-Known Member

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    I'm noticing slight detonation now that the temps here are around 100+.
    Does anyone think going one step colder on the plugs would help?
    I have an '05 4.0 and I'm running 91 octane from QT.
     
    XC4ME, May 28, 2009
    #1
  2. May 29, 2009 at 6:00 AM
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    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    No....Colder plugs wont help. FWIW, There was an issue with the fuel delivered to QT, and some of the 91 oct. tanks had 89. all should be good now. Run another tank, and see if it still happens. FWIW, QT is some of the best fuel out here, other than this one screw up.
     
    chris4x4, May 29, 2009
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  3. May 29, 2009 at 6:04 AM
    #3
    DanGer

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    DanGer Avatar approved by 98tacomav6

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    Who is QT? Except me, im a QT!

    But really what gas station is that
     
    DanGer, May 29, 2009
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  4. May 29, 2009 at 6:05 AM
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    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Its called Quick Trip.
     
    chris4x4, May 29, 2009
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  5. May 29, 2009 at 6:05 AM
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    DanGer

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    DanGer Avatar approved by 98tacomav6

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    Thanks, Never heard of them!
     
    DanGer, May 29, 2009
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  6. May 29, 2009 at 6:17 AM
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    mws4ua

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    mws4ua I'll try being nicer if you try being smarter.

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    mws4ua, May 29, 2009
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  7. May 29, 2009 at 8:26 AM
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    XC4ME

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    XC4ME [OP] Well-Known Member

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    Thanks for the heads up on the gas Chris. I'll run this tank down and reload.
     
    XC4ME, May 29, 2009
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  8. May 29, 2009 at 8:27 AM
    #8
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Keep me posted. Same thing happened to me, but my last tank was good.
     
    chris4x4, May 29, 2009
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  9. May 29, 2009 at 8:40 AM
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    XC4ME

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    XC4ME [OP] Well-Known Member

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    Will do.
     
    XC4ME, May 29, 2009
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  10. Jun 14, 2009 at 9:08 PM
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    XC4ME

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    XC4ME [OP] Well-Known Member

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    Chris,
    I ran the tank down to about 20 miles after the light came on. I filled it up with 91 Shell and the detonation got worse!

    I've only had the truck for about four months and didn't know when the previous owner last changed spark plugs so I gave that a try to see if it would help. Well the plugs had never been changed! 71K on the original plugs. :eek: The Denso's all came out at around .048 gap and the NGK's were at .050-.051. Put new Denso's back in and it purrs like a kitty. It didn't get rid of the pinging though.

    I filled up with 91 from QT today and after a few miles all seems good.

    PS. Your plug write up made the job very easy, thanks. :thumbsup:
     
    XC4ME, Jun 14, 2009
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  11. Jun 14, 2009 at 9:15 PM
    #11
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Glad it helped! :). You gapped the pugs like I mentioned too, Right?
     
    chris4x4, Jun 14, 2009
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  12. Jun 14, 2009 at 9:16 PM
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    dually

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    dually Low and slow

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    Thats odd you get detonation on a stock vehicle.. any who, i how the issue gets worked out!
     
    dually, Jun 14, 2009
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  13. Jun 14, 2009 at 9:20 PM
    #13
    brianr

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    brianr go shit in your hat

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    QuickTrip = babe central...skirts and tank tops galore.
     
    brianr, Jun 14, 2009
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  14. Jun 14, 2009 at 9:22 PM
    #14
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    :woot:
     
    chris4x4, Jun 14, 2009
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  15. Jun 14, 2009 at 9:24 PM
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    TacoNut

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    TacoNut IgnoringChrisWatchingEdLi veVicariouslyThroughMJP2

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    haha I remember the first meet you were late because of that
     
    TacoNut, Jun 14, 2009
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  16. Jun 14, 2009 at 9:25 PM
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    brianr

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    brianr go shit in your hat

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    WOOOOOT!!!!




    oh, yeah. I was, wasn't I.

    That dame was SMOKIN hot.
     
    brianr, Jun 14, 2009
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  17. Jun 14, 2009 at 9:26 PM
    #17
    TacoNut

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    TacoNut IgnoringChrisWatchingEdLi veVicariouslyThroughMJP2

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    They're all smoking hot dude
     
    TacoNut, Jun 14, 2009
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  18. Jun 14, 2009 at 9:28 PM
    #18
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Ummm...Not all of them....Remember the one in Walmart?
     
    chris4x4, Jun 14, 2009
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  19. Jun 14, 2009 at 9:28 PM
    #19
    TacoNut

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    TacoNut IgnoringChrisWatchingEdLi veVicariouslyThroughMJP2

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    no???

    when were we in walmart?
     
    TacoNut, Jun 14, 2009
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  20. Jun 14, 2009 at 9:29 PM
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    brianr

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    brianr go shit in your hat

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    ummmmmmmmmmmmmm, mostly.


    Wallie word is NOT the best place to look at women...afterall witches like Whitney go there.


    I remember being in Wal-Mart with Chris and Colton (06blueZ).

    She was GROSS
     
    brianr, Jun 14, 2009
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