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3rd Gen Tacoma Spark Plug replacement

Discussion in '3rd Gen. Tacomas (2016-2023)' started by SpeySquatch, Mar 15, 2018.

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  1. May 9, 2019 at 1:42 AM
    #21
    kahanabob

    #21
    kahanabob Well-Known Member

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    make sure you use anti seize on the plug threads, aluminum heads, very easy to muck up the threads in the head.
     
    kahanabob, May 9, 2019
    #21
    Big tall dave, NMTrailRider and uploadadventure like this.
  2. Jul 6, 2019 at 11:24 AM
    #22
    Jpmurph

    #22
    Jpmurph Well-Known Member

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    Jpmurph, Jul 6, 2019
    #22
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  3. Jul 6, 2019 at 12:21 PM
    #23
    splitbolt

    #23
    splitbolt Voodoo Witch Doctor

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    From Denso FAQ:
    Should I apply grease to the spark plug thread?

    If a thread lubricant such as grease is coated on the thread, tightening of the spark plug increases when applying the same torque; this can cause damage to the spark plug. Subsequently, vibrations may cause the plug to come loose. Because of this, DENSO recommends not using a thread lubricant.


    Spark plug manufacturers already plate the threads with an anti-seize coating
    Torque spec is 13 ft/lbs dry.
    If you use additional anti-seize you should reduce torque by 10-15% or 11-12 ft/lbs

    I've never used anti-seize, but, I have always used a torque wrench.

    IMO, most folks who booger a head with spark plugs don't use a torque wrench and end up overtightening. In subsequent spark plug changes they use anti-seize in an attempt to avoid future difficulties in removal. When in fact, they have compounded the problem.
     
    splitbolt, Jul 6, 2019
    #23
    waterlogged77, mquibble, Scotshonor18 and 6 others like this.
  4. Jul 6, 2019 at 4:02 PM
    #24
    kahanabob

    #24
    kahanabob Well-Known Member

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    once i removed the plugs from aluminum head on one of those retro 2nd gen T birds. i was like the plug never came loose, took muscle to loosen them and stayed that way until they came out, scared the crap out of me since i was doing it for a girl friend. i am not touching the plugs in my truck.
     
    kahanabob, Jul 6, 2019
    #24
  5. Jul 8, 2019 at 9:14 PM
    #25
    Hammer40

    #25
    Hammer40 Well-Known Member

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    Dealer and Toyota service rep in my area say 120k. The 30k applied only to the copper electrode plugs not used in the US. In any case, use OEM in these engines.
     
    Hammer40, Jul 8, 2019
    #25
  6. Jul 8, 2019 at 9:55 PM
    #26
    shakerhood

    #26
    shakerhood Well-Known Member

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    The owners manual calls for 60k on the 3rd Gen V6's.
     
    shakerhood, Jul 8, 2019
    #26
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  7. Aug 16, 2019 at 10:09 AM
    #27
    jaceon

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    jaceon Member

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    jaceon, Aug 16, 2019
    #27
    waterlogged77 and MountainManGuy like this.
  8. Aug 16, 2019 at 11:09 AM
    #28
    kfergie0097

    #28
    kfergie0097 Orange Blossom

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    Yes, My dealer and the manual stated 60k.
     
    kfergie0097, Aug 16, 2019
    #28
    shakerhood[QUOTED] likes this.
  9. Aug 16, 2019 at 8:57 PM
    #29
    Hammer40

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    Hammer40 Well-Known Member

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    Near as I can tell the 4705 replaced the OEM.
     
    Hammer40, Aug 16, 2019
    #29
  10. Aug 16, 2019 at 10:51 PM
    #30
    SpeySquatch

    #30
    SpeySquatch [OP] Function over Form

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    Use what the manual says. Please trust me
     
    SpeySquatch, Aug 16, 2019
    #30
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  11. Aug 17, 2019 at 5:02 AM
    #31
    jaceon

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    jaceon Member

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    The 4705's work fine. They're what I'm running on. Also I'm in a 2016 Tacoma off road now, I see I need to update my profile.
     
    jaceon, Aug 17, 2019
    #31
  12. Aug 17, 2019 at 5:12 AM
    #32
    capequahog

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    capequahog Well-Known Member

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    my second gen had 92k never changed the plugs
     
    capequahog, Aug 17, 2019
    #32
  13. Aug 17, 2019 at 7:51 AM
    #33
    SpeySquatch

    #33
    SpeySquatch [OP] Function over Form

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    There is definitely a difference in the gap and firing. I went back to the OEM and the firing was better and so was my mpgs
     
    SpeySquatch, Aug 17, 2019
    #33
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  14. Aug 17, 2019 at 8:37 AM
    #34
    Madtown

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    Madtown Well-Known Member

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    Use OEM plugs, do NOT use anti-seize on threads & torque to spec. I will be replacing mine at 60K.
     
    Madtown, Aug 17, 2019
    #34
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  15. Aug 17, 2019 at 10:40 AM
    #35
    jaceon

    #35
    jaceon Member

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    Good to know. I bought the 2016 wrecked and just changed plugs while the front end was apart before I started driving it. I do feel like my mpg seems a little low. I guess I'll put that on my too do list. Bummer these are listed as the replacement, although I guess technically they do work, just not as well it sounds
     
    jaceon, Aug 17, 2019
    #35
  16. Aug 17, 2019 at 11:04 AM
    #36
    auskip07

    #36
    auskip07 Well-Known Member

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    with iridium being on par with platinum i would have guessed that they should last 90-100k (atleast they do in other engine's) 60 seems too short
     
    auskip07, Aug 17, 2019
    #36
  17. Aug 17, 2019 at 11:41 AM
    #37
    splitbolt

    #37
    splitbolt Voodoo Witch Doctor

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    From what I gather, per DENSO;
    $8 IKBH20TT Denso Spark Plug Iridium TT - 4705
    IKBH20TT
    The "I" prefix denotes a 'standard' iridium plug. 60,000-80,000 mile possible expected service life, 30,000 mile recommended service interval.
    The "TT" suffix denotes twin tip.

    FK20HBR8
    The "F" prefix denotes a 'long-life' iridium plug; 120,000 mile possible expected service life, 60,000 mile recommended service interval.
     
    Last edited: Aug 17, 2019
    splitbolt, Aug 17, 2019
    #37
    econwatch and jmneill like this.
  18. Aug 17, 2019 at 1:58 PM
    #38
    SpeySquatch

    #38
    SpeySquatch [OP] Function over Form

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    The stock gap plugs are 0.032”
    Those other “replacements” are 0.04”
     
    SpeySquatch, Aug 17, 2019
    #38
    waterlogged77 likes this.
  19. Jan 28, 2020 at 5:54 PM
    #39
    EDJY

    #39
    EDJY Well-Known Member

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    Just had mine changed for the first time at 120k. I didnt realize that its a pain in the ass to get to the plugs on these motors. My local shop that does my maintenance had 450 in labor to get to them. I was shocked until i looked up how difficult it is to get to. Had them also do my first pad slap and an oil change while it was in.
     
    EDJY, Jan 28, 2020
    #39
  20. Jan 28, 2020 at 6:03 PM
    #40
    Judd2112

    #40
    Judd2112 Well-Known Member

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    Anybody know how the recommended intervals for changing in a 3rd Gen 4 Cylinder?
     
    Judd2112, Jan 28, 2020
    #40
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Denso Spark Plug Iridium TT - 4705
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