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The Truth About Spark Plugs....

Discussion in 'Technical Chat' started by chris4x4, Apr 20, 2011.

  1. Dec 10, 2013 at 6:17 PM
    #161
    DoorDing

    DoorDing Intentionally obtuse

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    yes
    I see you've sided with the coven.
     
  2. Jan 13, 2014 at 10:14 AM
    #162
    FishaRnekEd

    FishaRnekEd Well-Known Member

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  3. Jan 13, 2014 at 4:42 PM
    #163
    worthywads

    worthywads Well-Known Member

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  4. Feb 3, 2014 at 6:42 AM
    #164
    Marcoc

    Marcoc Well-Known Member

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    When i purchased my new to me Tacoma I serviced the diffs, T-case, synthetic motor oil, fuel system cleaner, and Denso plugs with the ones Toyota recommends, and air filter replacements. I do all service on any used vehicle I buy, in this case my Tacoma had 38k miles. My question is I am at 50k miles and drive mostly city stop and go should I replace them its been 12k miles. I mean they are cheap enough and easy to do. I also own a Mustang Cobra and I know many who replace the plugs every other oil change :eek:.
     
  5. Feb 3, 2014 at 6:48 AM
    #165
    Texoma

    Texoma Well-Known Member

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    If it makes you feel better to replace them, then go ahead, the recomended interval is 30k. Maybe do it when your odometer reaches 60k and see how you make out.
     
  6. Feb 3, 2014 at 6:54 AM
    #166
    Marcoc

    Marcoc Well-Known Member

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    good call. 20k it is.
     
  7. Sep 24, 2014 at 7:07 PM
    #167
    Shauncho

    Shauncho Embrace your inner Bro-ness

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    sorry to revive a dead thread, but what is it that they sell at the dealerships? the NGK's or the Denso? I'm guessing Denso.
     
  8. Nov 21, 2014 at 2:19 PM
    #168
    jkulysses

    jkulysses Well-Known Member

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    I just picked up 4 plugs for my 98' 2.7 from the dealer for $2.22 each. At that price it wouldn't make any sense to not buy the oem plugs straight from the dealer. Part# 90919-01176 & on the actual Denso plugs it says K16R-U.
     
  9. Mar 30, 2015 at 5:23 AM
    #169
    127.0.0.1

    127.0.0.1 AKA ::1

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    denso
     
  10. Dec 15, 2015 at 6:13 PM
    #170
    TRVLR500

    TRVLR500 Well-Known Member

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    When I bought mine with 120,000 on it I put in NGK iridiums. Only because they last so long. I'll pull them at 50,000 and see how they look. I suspect copper is a better performer but I like the idea of less maintenance. They seem to work fine for me so far with 20,000 on them.
     
  11. Jan 20, 2016 at 7:30 PM
    #171
    midewo

    midewo Member

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    yeah,
    was checking my maintenance log on my 2002 tacoma 2rz-fe (106k), and somehow 40K ago (before i was a tw member), i installed myself bosch platinum +4 (4418) plugs. i was sold them at a so cal auto parts place...kragen. but i have had no problems... my mileage is good, truck runs smooth, has never failed smog. i did have to replace my front o2 sensor 15k miles later... is that related??? the new toyota o2 is still going strong, so i am not sure the bosch caused that.

    so now what do i do???? the bosch have been installed for almost 10 years!!! i looked / verified in my om, the oem denso/ngk plugs stated earlier/above.... should i change the bosch out and use the denso k16r-u11 ???? should i keep using the bosch, but get new ones????

    i think i should use the oem denso's... with all the info from this great thread...but i am open to any feedback advice

    has my ecm learned the bosch characteristics? should i remove the negative bat cable while putting the densos in?
    thank you all!!!!!!!

    /midewo
     
  12. Jan 24, 2016 at 4:21 PM
    #172
    TRVLR500

    TRVLR500 Well-Known Member

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    If there is only 40,000 miles on the plugs they might not need to be replaced. Pull them out and look at them and then decide.
     
  13. May 20, 2016 at 10:22 AM
    #173
    FishaRnekEd

    FishaRnekEd Well-Known Member

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    I have always used NGK in my trucks, cars and bikes so im not sure about other brands.

    but fore sure, iridium lasts longer than platinum and platinum lasts longer than the cheap ones (I think nickel)

    I even ended up using several of each on my old dodge ram (the store only had a few of each left.)
    after about 20k, the cheap ones had more gap but the platinum and iridium had the proper gap still.

    if you are changing them yourself, or paying for labor, it is totally worth it to pay twice as much per plug for the iridium because they last 2-3 times longer.

    trying to get "more spark" would depend on the ENTIRE ignition system wiring, coils, computer, battery etc..., not just the plug.
     
  14. May 20, 2016 at 10:24 AM
    #174
    FishaRnekEd

    FishaRnekEd Well-Known Member

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    getting into the issue of heat range is a whole nother topic relating to altitude, atmospheric temp, type of fuel, air/exhaust/fuel flow etc. Its more of an issue when dealing with carbureted engines that have been modified and jetted.
     
  15. May 31, 2016 at 5:32 PM
    #175
    Sicyota04

    Sicyota04 Get in Where ya fit in

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    What about E-3 Diamond Fire Technology? Lol!
     
  16. Jun 1, 2016 at 10:22 AM
    #176
    FishaRnekEd

    FishaRnekEd Well-Known Member

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    LmfAo...


    I used to work on 4 separate fleets of motorcyles.

    I was able to figure out what maintenance things do/don't work.
     
  17. Jun 1, 2016 at 1:35 PM
    #177
    127.0.0.1

    127.0.0.1 AKA ::1

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    plain old replace-every-30,000-copper plugs work better than iridium or platinum or unobtanium

    copper has the least electrical resistance of any of the other
    metals used in plugs. you cannot get a better spark than a copper plug
    point blank not gonna happen. they just sacrifice more of the metal tip for that better spark,
    hence, replacement more often.

    a plug is a plug is a plug but if your chariot is rated for copper plugs it is a fools errand to install anything else
     
  18. Jun 1, 2016 at 1:41 PM
    #178
    FishaRnekEd

    FishaRnekEd Well-Known Member

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    ALL plugs are copper core.

    we are talking about the tip. JUST THE TIP

    there is no copper tip. Lmfao, that would just disintegrate
     
  19. Jun 1, 2016 at 1:48 PM
    #179
    127.0.0.1

    127.0.0.1 AKA ::1

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    copper plugs have copper tips surrounded by nickel alloy

    still more conductive than iridium or platinum

    iridium tips and platinum tips are nickle alloy based and less conductive
    than the nickel tip of a copper plug. they just last a long time but ...produce less spark.


    my point is
    all the jimmajam about fancy plugs is to steal money from yer wallet.

    unless your engine is specified to run a specific iridium or platinum plug type,
    throw cheap copper ones in and spend your savings on blackjack and hookers
     
    Last edited: Jun 1, 2016
  20. Jun 1, 2016 at 9:46 PM
    #180
    TRVLR500

    TRVLR500 Well-Known Member

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    This is true. I put iridiums in my taco for one reason only. They'll last 100,000 miles. Copper is the best conductor by far. I did Iridiums because I won't be forced to take them out and go through the hassle every 30,000. I'll check them at 50,000. Iridiums are for the lazy guys like me and there was no difference in fuel mileage or perfrmance when I went from stock copper to Iridiums.
     
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