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Spark Plug?

Discussion in '1st Gen. Tacomas (1995-2004)' started by SonoranDesertTacoma, Nov 25, 2023.

  1. Nov 25, 2023 at 2:26 AM
    #1
    SonoranDesertTacoma

    SonoranDesertTacoma [OP] New Member

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    It’s time for the 200K service on my 3.4L Tacoma. Spark plugs have me a little confused … too many choices.
    Are the dual prong Platinums by Denso or NGK absolutely necessary? Can a single electrode Bosch do as well? What’s with the $5 difference between a dual prong Denso and a dual prong NGK?
     
  2. Nov 25, 2023 at 2:47 AM
    #2
    rnish

    rnish Well-Known Member

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    I stick with stock Denso’s.
     
  3. Nov 25, 2023 at 6:04 AM
    #3
    Av180r

    Av180r Well-Known Member

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    Yes, only use the twin ground NGK or Denso.

    Maybe someone can correct me if this is wrong, but I think Toyota recommended replacing the spark plugs every 30k miles on the 5vz.
     
  4. Nov 25, 2023 at 3:15 PM
    #4
    Potomus Pete

    Potomus Pete Love my little truck

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    Rugular plugs..Nothing special
     
  5. Nov 25, 2023 at 4:31 PM
    #5
    Gen1andDone

    Gen1andDone Well-Known Member

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    Dual prong only, Toyota specifies it for some good reason. I've used both part #'s called out in the manual, Denso and NGK. I've read some say the single ground plugs work fine but just wear out faster, others claim poor performance. Never felt the need to experiment for myself. The 3.4l plugs spark twice as often as some other engine platforms, supposedly under those conditions the dual ground plugs last longer.
     
  6. Nov 25, 2023 at 6:02 PM
    #6
    ztwatson

    ztwatson Well-Known Member

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    I used regular single prong spark plugs for 25k miles and they worked fine. Recently replaced with dual prong NGKs.
     
  7. Nov 25, 2023 at 6:21 PM
    #7
    Cheap Taco

    Cheap Taco Well-Known Member

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    Spend the extra cash on the duals, like others have said denso or ngk
     
  8. Nov 25, 2023 at 6:46 PM
    #8
    Laxtoy

    Laxtoy Dog is my backseat driver

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