Spark plugs change on 4th gen V6

[ran]

On the passenger side, I never unhooked the coils, driver's side, definitely needed that. First time on my truck, the NGKs where under there.
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2007 SE V6 Titanium

 

[Supersonic]

Here I went with Autolite Iridium XP5325. My reasoning is quality gap is surely narrowing; price point, Advanced Auto had 20% off online/store pick-up coupon; 0.6mm center electrode, some research revealed 4mm can wear faster, while performance of larger 5 or 6mm center electrode is not much different; platinum sidewire, seems others except NGK didn't have platinum sidewire. No check engine light yet, but time will tell if my savings pays off.

The old plugs were NGK R LFR6C, 4 gaps were .043 to .045, one gap was slightly larger and one slightly smaller, but they all looked normal at a glance. Probably didn't need changing except for the too narrow, glad I caught that. 2005 V6 with 295k.

An aside, before I knew better, I put Bosch Iridium's in my 2005 Camry 4cyl, 10k on them and no problems yet.

 

[emonell2]

Replaced Spark Plug

Just replaced my spark plugs on 2007 V6. Passenger side was easier than driver side, but still not too bad. I did remove the top bolt and loosen the bottom bolt on the bracket cover the drive side so I could rotate it out of the way.

Make sure you have at least a 12 in extension but I even attached another extension on that to make it longer, and used electrical tape around the spark plug socket so it wouldn't slip off.

The ones I took out weren't bad, but looks like the previous owner didn't gap them. I gapped mine to the owner's manual specification of 0.43mm.

 

[andes]

Looking at the Toyota maintenance schedule online I noticed that for this engine Toyota requires that the spark plugs are changed at 60K (bought it certified preowned at 34K, so I don't know if it was done at 30K).
Required by the terms of the Emission Control Warranty.

Well I'm at 65K, didn't change'em at 60K. Dealer serviced (oil changes at ~5K intervals). Didn't know and the dealer didn't bother to tell me (offered other nonsense though).
The car runs fine and I can't detect any signs that the spark plugs actually need change.
So, did I void my "Emission Control Warranty"?

The truck may run fine but the plugs are not gapped anymore at .043 at 60k.

I too was pushing 60k with some NGK 7787, but will swap out at 30k from here on out. The gap had eroded to .05+ on all of the old plugs.

The Coil on plugs and connectors are in great shape at 145k.

NGK 7787's are good, maybe not the best but solid in my book.

 

[457Run]

I am getting ready to replace my plugs and coils on my 4Runner. It has 200k on it