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Changed plugs

Discussion in '2nd Gen. Tacomas (2005-2015)' started by lipripr, May 27, 2009.

  1. May 27, 2009 at 3:36 PM
    #1
    lipripr

    lipripr [OP] Member

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    A huge thankx to chris4x4 for the write up. I read it about 100x's before attempting it.
    When I asked 3 different techs at the dealership about two different plugs, all 3 looked at me like I was nutz! Sure enough two different kinds. Same dealership also tried to charge $6.50/plug for replacements.:eek: Called around and got them for 3/plug. Guess which dealership I'll be using from now on.
     
  2. May 27, 2009 at 5:06 PM
    #2
    FL4x4Taco

    FL4x4Taco Well-Known Member

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    Whats up with the different plugs? what years are effected? Which plug is better? I have 7k on my 2009 and I am begining to think about switching to an Iridium; either Denso or NGK. Haven't researched anything yet. All I know is I'm pretty sure my taco does not come with Iridium plugs. Other than the iridium lasting over 100k miles, what's the real advantage? any HP/MPG gains? I just wanna do them so I never mess with them again!
     
  3. May 27, 2009 at 5:19 PM
    #3
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    If you have the V6, in many cases, the Iridiums, and Platinum plugs have given LESS performance and in some cases caused the engine to run pooly. I have found the best performance to be had with the OEM Denso plugs, gapped around .040 to .042.
     
  4. May 27, 2009 at 5:19 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    :proposetoast:
     
  5. May 27, 2009 at 5:23 PM
    #5
    grantfire319

    grantfire319 Well-Known Member

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    who knows with the different plugs??? I would have to say it has something to do with Toyota's quality assurance. They only order so much of something at one time, and get it from one place, then put it on a set number of vehicles. With one side NGK, the other Denso (which Toyota owns) they can root out any problems. It could also be a contract deal, where they buy so many NGK's, etc,etc. Just a guess.
     
  6. May 27, 2009 at 5:25 PM
    #6
    FL4x4Taco

    FL4x4Taco Well-Known Member

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    so my 4.0V6 has Denso's from the factory. What kind? standard, platinum? I've always been a NGK guy, but Denso isn't bad either I bet. Do the 2009 V6's have more than one type of plug?
     
  7. May 27, 2009 at 5:28 PM
    #7
    Navigator

    Navigator Well-Known Member

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    17" American Racing Assaults on 265/70/17 Goodyear AT/S, TRD Exhaust, TRD CAI, Toyota Roof Rack, XM install with antenna out 3rd brake light, Red LED Map Lights, AUX Amber LED rocker switch for LED footwell lights, LUND Bug Screen, EXTANG Tri-Fold Tonneau, Hertz Component Speakers w/ TacoTunes Mounts, Infinity Kappa 4 amp, Image Dynamics 10" sub in TacoTunes enclosure, Pop n' Lock, Toyota Aluminum Wedge Running Boards, BHLM, Self Performed '05 Cowl Leak TSB, E-Z Cool Insulation/Sound Deadener applied to floorboard, headliner, and cab bulkhead, 896 Foglight bulbs as backup lights, Weathertechs, Pioneer Double Din, Scan Gauge, AutoSoft Remote Start, 2010 4Runner Heated/Signal/Puddle Mirrors.
    I did mine on Monday. I bought the Toyota Denso plugs from the stealership for $23- total. It took about an hour to do them, piece of cake. I lucked out because I had already removed the factory intake from the pass. side when i installed the TRD CAI. I also changed out the LSD fluid with Toyota Hyproid gear oil. I still need to do the Trans and frt. diff, I guess that could be next weekends project.

    Thanks for the plug write-up Chris. I read through it a couple times before changing the plugs. :D
     
  8. May 27, 2009 at 5:34 PM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    OEM plugs are Nickle/Copper. The V6 has 2 types of plugs installed, NGK on the driver side, and Denso on the passenger side. I have been looking into this, and the only thing that seems to make any sence, is that the driver side plugs can have a little more resistance (as the leads to the coil are shorter than the passenger side), thus being able to use a lesser expensive plug. I have found the same with the 3.4 V6 also.
     
  9. May 27, 2009 at 5:34 PM
    #9
    FL4x4Taco

    FL4x4Taco Well-Known Member

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    Well from what it sounds like no reason to change my plugs out right now at 7k then. Wait til 30K I guess like the book states. And then use the OEM cheapie Denso. 10-4 guys.... saves me time and money right now. I just thought the iridium might do a bit better, but guess not.
     
  10. May 27, 2009 at 5:35 PM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Your very welcome! Glad to help. :proposetoast:
     
  11. May 28, 2009 at 1:55 PM
    #11
    Livewire01

    Livewire01 New Member

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    What about using the platinum plugs from NKG? Are there any plugs out there that will give better performance to the V6 at all?
     
  12. May 28, 2009 at 1:58 PM
    #12
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    On the 1GR-FE, many times Platinum plugs cause poor performance, and running issues....Use the OEM plugs for best performance..
     
  13. May 28, 2009 at 2:04 PM
    #13
    Livewire01

    Livewire01 New Member

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    is there a longer life plug available? I didnt realize that i had to change my plugs every 30,000 miles, and now have 60,000 on the original ones, do you think this did any harmful damage to my engine?
     
  14. May 28, 2009 at 2:09 PM
    #14
    Jester243

    Jester243 mod status????

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    Has your milage dropped off?
     
  15. May 28, 2009 at 2:17 PM
    #15
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    No damage, But Im sure the gaps are HUGE. Platinum and Iridium plugs seem to reduce performance in these engines, from what I have found. Use the OEM Denso's, and change them at 30K for best performance.
     
  16. May 28, 2009 at 2:17 PM
    #16
    FL4x4Taco

    FL4x4Taco Well-Known Member

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    Wait a minute... we have NGk's on the driver side bank and Denso's on the Passenger side bank. WTF!!!!! I've never heard of that before!!! OMG. So when we replace plugs, do we do all the same brand?
     
  17. May 28, 2009 at 2:19 PM
    #17
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    When you replace the plugs, Use all Denso plugs. I have found that the 1GR-FE runs best with those, and gapped between .040 and .042
     
  18. May 28, 2009 at 2:31 PM
    #18
    Livewire01

    Livewire01 New Member

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    No mileage drop off, just want to get back on track with the maintanence schedule, thanks for the info. Should i get the Denso's from the Yota dealership or somewhere else? This is my first yota, I swithched my oil to syn @ 5,000 miles and got the Intake Kit @ 15,000. My mileage only changes down to 18mpg when I tow my boat, and since that isnt all the time, i usually get 21mpg with 265/75/16's
     
  19. May 28, 2009 at 5:20 PM
    #19
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    I just get them at the dealer, as they always have them in stock.
     
  20. May 28, 2009 at 9:39 PM
    #20
    BUZZ5

    BUZZ5 Well-Known Member

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    Got my Densos from dealer today,about $24 total.Changed them out tonight,took about 45 min. including beer breaks.Turned 30k Tues. & have done everything on the 30k maint.so far except LSD fluid.I will knock that out next week.The plugs I took out looked really good,could probably still be used for awhile.I will save em for an emergency or something after shooting some contact cleaner on them.Is everyone using the Toyota lsd fluid or is there something better recommended?
     
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