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Ngk plugs

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Beerline123, Dec 27, 2014.

  1. Dec 27, 2014 at 7:12 AM
    #1
    Beerline123

    Beerline123 [OP] Well-Known Member

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    I'm about to change my plugs on 4.0 but ngk has a PDFs which tells you nt to use antiseize paste. What are other members doing?
     
  2. Dec 27, 2014 at 7:36 AM
    #2
    BazzokaJoe

    BazzokaJoe Well-Known Member

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  3. Dec 27, 2014 at 7:36 AM
    #3
    DocD

    DocD Well-Known Member

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    I just changed to NGK's at 30k, so far I like them, although the old plugs looked good & the gap was fine, the NGK's seem to smooth out the engine a little (that could be just in my mind) gas mileage did improve noticeably . To your question, Yes, I used antiseize (very sparingly) jmop
     
  4. Dec 27, 2014 at 7:42 AM
    #4
    Beerline123

    Beerline123 [OP] Well-Known Member

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    I'm sorry I don't know what I was thinking of I bought denso also. I think it's my seadoojetski that uses ngk. Thanks for answering my question. Happy holidays
     
  5. Dec 27, 2014 at 8:36 AM
    #5
    edm3rd

    edm3rd Well-Known Member

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    NGK puts a special plating on the threads they say serves the same purpose as anti-seize.
     
  6. Dec 27, 2014 at 8:45 AM
    #6
    fixer5000

    fixer5000 the logical one

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    when i changed mine at 30 thousand the ngk's were noticeably worn more than the denso's were. replaced with denso's
     
  7. Dec 27, 2014 at 1:21 PM
    #7
    BlueMile

    BlueMile Frozen north specialist

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    Just did mine, first interval since buying it and the previous owner had Densos in the passenger bank, NGKs in the driver. It's possible someone got lazy and only swapped one bank last time around (not wanting to disconnect the heater core hose/support bracket to get at the last 2 cylinders there) but wow, those NGKs were dead while the Densos still had about 1/3 life left at least.

    Stick with OEM and feel free to use a little anti-sieze on them either way, it's not going to hurt and it might just help.
     
  8. Dec 27, 2014 at 1:30 PM
    #8
    t4daddy

    t4daddy Well-Known Member

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    Seems that is the way they leave the factory, one bank NGK, other bank Densos.
     
  9. Dec 27, 2014 at 1:43 PM
    #9
    edm3rd

    edm3rd Well-Known Member

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    This is how Toyota decided to show both of their plug suppliers they were getting 50% of the business.
     
  10. Dec 27, 2014 at 1:45 PM
    #10
    robssol

    robssol If it ain't broke, leave it the eff alone!

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    Yes. They come from the factory one side NGK, other side Denso. Toyota wisdom:rolleyes:

    Forgot to mention, I apply anti-sieze to every sparkplug I change. And about everything else I touch on my truck. (Wisconsin winters)
     
    Last edited: Dec 27, 2014
  11. Dec 27, 2014 at 1:49 PM
    #11
    lowcountrytj

    lowcountrytj Third Member

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    I always use Anti seize regardless. As long as they are properly torqued no worries. I always check torque on the next oil change following plug replacement. Just my 2cents.
     
  12. Dec 27, 2014 at 2:48 PM
    #12
    stump jumper

    stump jumper Well-Known Member

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    +1
     
  13. Dec 27, 2014 at 3:26 PM
    #13
    nd4spdbh

    nd4spdbh Well-Known Member

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    i find it interesting that the densos are the better wearing plugs. I know on the 3.4L NGK plugs were the ones that look almost new at 100k and the densos look like a 2 dollar whore.
     
  14. Dec 28, 2014 at 10:02 AM
    #14
    Lester Lugnut

    Lester Lugnut Well-Known Member

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    Differences in spark plug wear may simply be:

    A: Fuel - good fuel vs. cheaper brands
    B: Engine Seal - Valve stem seal/piston ring leakage
    C: Driving conditions - stop-n-go vs. highway
    D: Type of driving - aggressive vs. conservative

    Drive for a year with NGK; then a year with Denso and compare.
     
  15. Dec 28, 2014 at 10:08 AM
    #15
    hetkind

    hetkind Well-Known Member

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    I use NGK and anti-seize
     
  16. Dec 28, 2014 at 10:51 AM
    #16
    TACK

    TACK Well-Known Member

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    The gap on my three Densos was close to 0.050, and the NGKs were closer to 0.060. I'm sticking with Denso.
     
  17. Dec 28, 2014 at 12:54 PM
    #17
    t4daddy

    t4daddy Well-Known Member

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    I'm thinking it's past time to change mine, what is the proper gap?
     
  18. Dec 28, 2014 at 1:55 PM
    #18
    TACK

    TACK Well-Known Member

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  19. Dec 28, 2014 at 2:14 PM
    #19
    Janster

    Janster Old & Forgetful

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    Anti seize EVERY spark plug change and the proper torque.

    I bought my plugs at the dealer and they're pre-gapped. Trucks been running fine (on my 2nd spark plug change).
     
  20. Dec 28, 2014 at 2:34 PM
    #20
    DocD

    DocD Well-Known Member

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    I don't think they are, I changed mine at 30k both were will within tolerance,
    if I were to pick one, it would be the NGK, only because that is what most Japanese car makers use, Yes they are usually a little more spendy. but I am not going to disagree with Japanese, engineers. I have never liked the idea of two different brand plugs in a vehicle, not sure why this is done, one can only guess, but by putting all NGK's in mine really smoothed out the engine, & gas mileage improved noticeably, maybe Denso's would do the same, I don't know. If I ever need new plugs I may try them.jmop
     

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