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Spark plug replacement

Discussion in '2nd Gen. Tacomas (2005-2015)' started by tractng, Oct 21, 2015.

  1. Oct 21, 2015 at 8:40 AM
    #1
    tractng

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    tractng [OP] Well-Known Member

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    tractng, Oct 21, 2015
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  2. Oct 21, 2015 at 8:46 AM
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    Nighthawk

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    Nighthawk 'streme spoats

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    Not sure of the mileage but I used NGK iridium, pricey but they seem to work really well.
     
    Nighthawk, Oct 21, 2015
    #2
  3. Oct 21, 2015 at 8:49 AM
    #3
    wake100

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    wake100 Well-Known Member

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    wake100, Oct 21, 2015
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  4. Oct 21, 2015 at 8:49 AM
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    nd4spdbh

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    nd4spdbh Well-Known Member

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    OEM recommended DENSOS!!!

    no need or want for high priced iridium in the v6 (non boosted).
     
    nd4spdbh, Oct 21, 2015
    #4
    Rock Lobster likes this.
  5. Oct 21, 2015 at 8:50 AM
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    PVT Pablo

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    PVT Pablo ☠

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    First, @tractng the link you provided is a dealer scheduled maintenance which differs from Toyota Corporation's scheduled maintenance.

    This is the link to Toyota's Official list of scheduled maintenance. (30k miles is when Toyota recommends first spark plug change)
    http://smg.toyotapartsandservice.com/guides.php

    These are the plugs you want. They are the OEM plugs. (Toyota Tacomas come stock with 3 Denso and 3 NGK. Replace with the plugs in the link provided)
    $5 Denso (3381) K20HR-U11 Traditional Spark Plug, Pack of 1
    http://www.amazon.com/gp/product/B0012Q4H96?psc=1&redirect=true&ref_=od_aui_detailpages00
     
    PVT Pablo, Oct 21, 2015
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  6. Oct 21, 2015 at 2:54 PM
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    Jimmyh

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    Jimmyh Well-Known Member

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    30K and NGK or Denso.
     
    Jimmyh, Oct 21, 2015
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  7. Oct 21, 2015 at 5:07 PM
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    tacoma guy

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    tacoma guy Well-Known Member

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    tacoma guy, Oct 21, 2015
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  8. Oct 21, 2015 at 6:52 PM
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    Holeshot

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    Holeshot Well-Known Member

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    I am sure this has been answered before, but what is the rationale for 2 different brands of spark plugs and which brand goes in which cylinders? My truck only has 7700 miles so not due yet.
     
    Holeshot, Oct 21, 2015
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    Justus likes this.
  9. Oct 21, 2015 at 7:40 PM
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    shakerhood

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    shakerhood Well-Known Member

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    It was that way on my 2000 and 2008, my theory has always been that they must make each head in a different factory, but honestly no real idea why.
     
    shakerhood, Oct 21, 2015
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  10. Oct 21, 2015 at 7:45 PM
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    fletch aka

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    fletch aka www.BeLikeBrit.org

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    I always heard it was an availability issue, if NGK or Denso went on strike production would not be shut down due to all of your eggs in one basket.
     
    fletch aka, Oct 21, 2015
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  11. Oct 21, 2015 at 7:53 PM
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    Jimmyh

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    Jimmyh Well-Known Member

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    You do not have to use two different brands. Either NGK OR Denso. I prefer NGK, but that is just me.
     
    Jimmyh, Oct 21, 2015
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  12. Oct 21, 2015 at 8:15 PM
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    Holeshot

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    Holeshot Well-Known Member

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    Fletch aka has a plausible answer but still doesn't explain why maybe one shift or day of the week could not use one brand and rotate brands every day or shift. Having two different brands in each V6 engine seems dumb.

    Jimmy I have had great service from NGK plugs in Mercury outboards and small engines also Yamaha outboards. Denso plugs are probably just fine also.

    When it is time to replace mine I will use either NGK or Denso but only one brand at a time unless someone offers a convincing reason to do otherwise.
     
    Holeshot, Oct 21, 2015
    #12
  13. Oct 27, 2015 at 11:04 AM
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    tractng

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    tractng [OP] Well-Known Member

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    Thanks guys. 30k is a little fast for spark plugs replacement for new vehicles.
     
    tractng, Oct 27, 2015
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  14. Oct 27, 2015 at 12:07 PM
    #14
    Soul Surfer

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    Soul Surfer J!m! Was Last Seen: Roam in’ Around…

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    jimmyh what's your opinion on the plug gap. I know some folks just install them right out of the box. Thanks.
     
    Soul Surfer, Oct 27, 2015
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  15. Oct 27, 2015 at 12:13 PM
    #15
    js312

    #15
    js312 Well-Known Member

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    I used NGK on mine. Almost due again. It's a quick, easy job.

    Regarding gap, I believe iridium or platinum plugs come pregapped. Others do not. Out of the box, my NGKs were wildly varied so I corrected them all to spec.
     
    js312, Oct 27, 2015
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  16. Oct 27, 2015 at 2:19 PM
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    Jimmyh

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    Jimmyh Well-Known Member

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    Copper plugs check and gap as needed to manual specs.

    Irridium plugs come pre-gapped and I check them only. If it is off out of spec I take them back for replacement. ( I have never had one out of spec )
     
    Jimmyh, Oct 27, 2015
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  17. Oct 27, 2015 at 2:52 PM
    #17
    Soul Surfer

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    Soul Surfer J!m! Was Last Seen: Roam in’ Around…

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    Thank You Bud!
     
    Soul Surfer, Oct 27, 2015
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  18. Nov 2, 2015 at 12:01 PM
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    PatG

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    PatG New Member

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    Thanks for the great info. Can you increase the plug replacement interval if platinum or iridium plugs are used instead of copper? Or is that not recommended?

    Pat
     
    PatG, Nov 2, 2015
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  19. Nov 2, 2015 at 1:46 PM
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    127.0.0.1

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    127.0.0.1 AKA ::1

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    there is no rationale other than some ancient agreement that: since toyota owns denso (on paper not so much anymore but in reality yes they do) they need
    to spec some NGK parts to meet some type of old yakuza/handshake deal from way beyond all our times

    Originally, NGK supplied most of its products to Japanese automakers

    so toyota stuffs (most if not all) it's V engines with 1/2 of denso, and 1/2 the V with NGK, so that NGK gets some sales revenue


    toyota dealers stock denso of course. you can use any mix of owners manual specified NGK or denso you want.
    -------------------------------------------------------------------------------
    some will state 'oh denso/ngk you need to keep it that way because...that is wasted spark...electronic jibbajabba...coils need it...no it's not... it is purely 'corporate wang'
     
    Last edited: Nov 2, 2015
    127.0.0.1, Nov 2, 2015
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  20. Nov 2, 2015 at 1:53 PM
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    ZachPrerunner

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    ZachPrerunner Sometimes she goes, sometimes it doesn’t

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    Yes, if you use another brand of spark plugs, they should tell you on the box/container when to replace. If you don't use the Denso/NGK from the dealer, then I would research popular brands that offer a better/similar quality. Most aftermarket plugs need to be changed at either 30,000 or 60,000. I wouldn't wait till 100,000 to change spark plugs because they are so cheap to replace.
     
    ZachPrerunner, Nov 2, 2015
    #20

Products Discussed in

Denso (3381) K20HR-U11 Traditional Spark Plug, Pack of 1
$4.90
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