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Old 11-11-2004, 08:15 PM   #1 (permalink)
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Which spark plugs for 3.4 Tacoma?

I am due to chang my plugs. 3.4 in an '03 Prerunner. Mostly stock...... Amsoil filter and deck plate.

Any reccomendations?
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Old 11-11-2004, 08:22 PM   #2 (permalink)
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Denso Iridium IK 16's
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Old 11-11-2004, 10:10 PM   #3 (permalink)
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The 3.4 uses two different types of spark plugs for the driver and passenger side which are Denso and NGK. I'm sure you can pick them up at the dealer. Look here: http://www.4x4wire.com/toyota/mainte...ep3.html#plugs
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Old 11-21-2004, 10:33 AM   #4 (permalink)
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In regards to the two brands of plugs, I think toyota simply puts the spark plugs into the heads before final engine assembly. And the two heads that the guy/robot grabbed off of the rack while putting the engine together came from two different lots and therefor two different brands of plug.
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Old 11-21-2004, 11:36 AM   #5 (permalink)
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Yeah, you don't have to buy three of each kind. Just get a full set of either the NGKs or Nippon Densos and you'll be fine.
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Old 11-21-2004, 07:43 PM   #6 (permalink)
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Quote:
Originally Posted by quik05
In regards to the two brands of plugs, I think toyota simply puts the spark plugs into the heads before final engine assembly. And the two heads that the guy/robot grabbed off of the rack while putting the engine together came from two different lots and therefor two different brands of plug.
I even have a sticker under my hood specifically stating to use dual electrode plugs(NGK's). They are supposively the plugs used on the passenger side under the coil packs. I'm going to change mine soon and will see what plugs the dealer has for the 3.4.
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Old 11-22-2004, 11:51 AM   #7 (permalink)
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Talking

i just got the ngks from the dealer. couple bucks each, not too bad.
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Old 11-22-2004, 12:01 PM   #8 (permalink)
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Quote:
Originally Posted by 4x4Yota
I even have a sticker under my hood specifically stating to use dual electrode plugs(NGK's). They are supposively the plugs used on the passenger side under the coil packs. I'm going to change mine soon and will see what plugs the dealer has for the 3.4.
Dual electrode or two different types of plugs for each side, or both?

Clearly the 5VZ requires dual electrode, however, the two different types of plugs thing is completely foreign to Phoenix area dealers...sounds like an unnecessary complication to me.
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Old 11-22-2004, 02:29 PM   #9 (permalink)
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Just picked some plugs up from the dealer and there was only one plug listed for the 3.4. They are dual electrode Densos. I will have to see what plugs come out of mine. Anyone try using 1/4" fuel line to thread in the new spark plugs like it shows on the 4x4wire writeup or Haynes manual? It's supposed to help not strip the threads in the head.

Last edited by 4x4Yota; 11-22-2004 at 04:32 PM.
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Old 12-01-2004, 11:25 AM   #10 (permalink)
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Quote:
Originally Posted by Bud
just picked up a set of spark plugs for the taco. Dude gave me 6 densos and i asked him if it came with 2 sets of plugs. He just gave me the look and handed me six; which turned out to be iridiums for $1.50 each.

where do i go to find this crackhead? I want some iridiums for $1.50
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Old 12-01-2004, 02:03 PM   #11 (permalink)
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Quote:
Originally Posted by kevin444
where do i go to find this crackhead? I want some iridiums for $1.50
the dude at the counter didnt read the dealers coupon carefully when i purchased the plugs. In the $1.50 coupon in small print, iridiums not included but when i printed it out on my el cheapo printer, you could hardly read the print. I didnt realize i had iridiums when i got home.
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Old 12-01-2004, 08:25 PM   #12 (permalink)
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Quote:
Originally Posted by Bud
the dude at the counter didnt read the dealers coupon carefully when i purchased the plugs. In the $1.50 coupon in small print, iridiums not included but when i printed it out on my el cheapo printer, you could hardly read the print. I didnt realize i had iridiums when i got home.

print and or scan it for yt buddies
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URD 2.2 Pulley
URD IDLER PULLEY
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Custom 2.25" DP
Custom 2.25" Midpipe
Doug Thorley 2.25 Exhaust.
Supra N/A 330cc injectors
AEM FIC
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Electric Fan Conversion
Exedy Stage 2 Clutch
LCE Lightened Aluminum Flywheel
Injen Intake
ADDCO F+R Sways
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Old 12-01-2004, 08:25 PM
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