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HOT SPARK PLUGS

Discussion in '2nd Gen. Tacomas (2005-2015)' started by LetsTacoboutitmore, Jul 11, 2020.

  1. Jul 11, 2020 at 9:28 AM
    #1
    LetsTacoboutitmore

    LetsTacoboutitmore [OP] New Member

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    Just doing a tune up on a 2.7L with 295k and found 2 of the 4 coilpack boots had melted in place. Noticed the plugs were NGK R instead of Denso, could this be why or is it time to replace the coil packs? Please advise
     
  2. Jul 11, 2020 at 9:33 AM
    #2
    wilcam47

    wilcam47 Well-Known Member

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    Where ever I go, there I am...
    Id replace...thats a good life on them.
     
  3. Jul 11, 2020 at 9:37 AM
    #3
    tirediron

    tirediron Well-Known Member

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    If they've melted it's time to replace them, irrespective of why, and FWIW, like plugs, I would replace all four vice just the damaged ones. As to why, it's hard to say; if the plugs were spec'd for your engine, then it shouldn't matter what brand they were. NGK makes a quality plug and I wouldn't have any qualms about using them. How badly were they melted?
     
    michael roberts and wilcam47 like this.
  4. Jul 11, 2020 at 9:50 AM
    #4
    ARB1977

    ARB1977 It’s a beaut Clark

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    I would just replace the boots. No need to replace the whole coil pack.
     
  5. Jul 11, 2020 at 9:58 AM
    #5
    LetsTacoboutitmore

    LetsTacoboutitmore [OP] New Member

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    Just the boots on the bottom were melted, had to scrape and pick out the peices. Just figured there was a root cause somewhere, never seen it before. Thanks for the reply
     
  6. Jul 11, 2020 at 10:08 AM
    #6
    tirediron

    tirediron Well-Known Member

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    Coils don't like heat. If there's enough radiant heat to melt the boot, I would expect it to have degraded the coils, and if they're OE, then it's probably time anyway.
     
  7. Jul 11, 2020 at 10:44 AM
    #7
    ARB1977

    ARB1977 It’s a beaut Clark

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    Do a resistance check. Granted 240K is pretty impressive on original coils.
     
  8. Jul 11, 2020 at 7:43 PM
    #8
    Jimmyh

    Jimmyh Well-Known Member

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