Spark plug replacement on 2014 Highlander, any tips?

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May 4, 2008
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Reason I ask, what a pain the rear 3 were on our previous 05 Sienna, and that's an understatement.

This looks pretty basic and with more room to work, but wanted to ask here before I start, currently has 110K miles.
 
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Manual says you'll need a new throttle body gasket (Toyota p/n 22271-0P020) and intake manifold gasket (Toyota p/n 17176-0P021).

I'm using Denso FK20HR11 (3426) iridium-tipped plugs (Toyota p/n 90919-01247), but I bought them at Advance Auto Parts. I plan on replacing the plugs in my '16 for this first time this weekend as I should reach 100k miles.
 
I'm at 100k on the 4Runner so of course I need to change mine. I will buy locally at an indy parts store, and really am not looking forward to my second plug change on a V6. Honda Pilot was the first. I've only owned 4-bangers and the plugs took 20 minutes for all.
 
I'm at 100k on the 4Runner so of course I need to change mine. I will buy locally at an indy parts store, and really am not looking forward to my second plug change on a V6. Honda Pilot was the first. I've only owned 4-bangers and the plugs took 20 minutes for all.
4Runner has longitudinal engine. It should be much easier. It should take same amount of time as with 4 banger plus two more plugs.
 
Note: my posts are regarding the 2GR-FE engine. I assume the original poster has a V6 as well & no differences in 2014 vs. 2016. MY2017 is when the engine changed to direct injection.

Steps:
Remove intake air surge tank assembly
Remove ignition coil assembly (there are 2 wire harness clamps to be disengaged)
Remove spark plug

Manual states the following torque values:
Plugs: 13ft-lb
Ignition coil assemblies: 7ft-lb
 
Reason I ask, what a pita the rear 3 were on our previous 05 Sienna, and that's an understatement.

This looks pretty basic and with more room to work, but wanted to ask here before I start, currently has 110K miles.
The 2GR is a lot easier than the 3MZ-FE.

It’s a 90 min, job, max. I personally like to remove the cowl, but I know others do not.
 
I bought 6 ACDelco plugs off Amazon. What should I look for to determine they're counterfeit?
They're in an Amazon box. That's enough to be suspicious.... It's not worth the risk and even if they just fail early, on some vehicles the labor makes it not desirable to re-do the job so soon. If you saved a LOT of money buying them from Amazon, that's even more reason to be suspicious.
 
They're in an Amazon box. That's enough to be suspicious.... It's not worth the risk and even if they just fail early, on some vehicles the labor makes it not desirable to re-do the job so soon. If you saved a LOT of money buying them from Amazon, that's even more reason to be suspicious.
I went and reviewed my past order. Apparently I paid $48.59 for them.
 
$8/each... That seems pretty low to me but all of our cars use Iridium plugs which are generally closer to $15 each.
They came in individual ACDelco boxes inside of a bigger ACDelco box. The Amazon package was just a mailer.
 
They came in individual ACDelco boxes inside of a bigger ACDelco box. The Amazon package was just a mailer.
You said....

I bought 6 ACDelco plugs off Amazon
Don't buy spark plugs off of Amazon. I've seen and read enough stories from other members here that it's simply not worth saving a few bucks. On our cars, the plugs easily last 100k miles so I'll pay more at this point. My own personal experience is my son bought NGK plugs off Amazon and the price was "really good". They showed up in a Honda box. After a number of months (can't remember), he started getting random misfires but only when cold. Looked up the sale on Amazon and the listing was gone, as was the seller. He went straight to O'Reilly (it's close to us) and bought (6) NGK plugs, we installed them, and no more misfires. Anecdotal evidence ? Yeap. Enough for me though.
 
You said....


Don't buy spark plugs off of Amazon. I've seen and read enough stories from other members here that it's simply not worth saving a few bucks. On our cars, the plugs easily last 100k miles so I'll pay more at this point. My own personal experience is my son bought NGK plugs off Amazon and the price was "really good". They showed up in a Honda box. After a number of months (can't remember), he started getting random misfires but only when cold. Looked up the sale on Amazon and the listing was gone, as was the seller. He went straight to O'Reilly (it's close to us) and bought (6) NGK plugs, we installed them, and no more misfires. Anecdotal evidence ? Yeap. Enough for me though.
Ok, but did they ship directly from Amazon or an outside seller? I always check that before I put the item in the cart.
 
Thanks for the tips so far....sorry, I meant to include I have the V6. My variant is the 2GR-FE. Hope that didn't mess this thread up.

The plug change in the 3MZ-FE in our Sienna was a big pain.
 
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