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-   -   4.0 v6 1gr-fe spark plug change instructions (https://www.toyota-4runner.org/maintenance-detailing/57478-4-0-v6-1gr-fe-spark-plug-change-instructions.html)

ran 08-21-2019 04:18 PM

that last plug on the driver's side, I did by feel. Bifocals didn't help at all.
________________
2007 SE V6 4.0 titanium

AuSeeker 08-21-2019 10:06 PM

Quote:

Originally Posted by Kal__ (Post 3338231)
I went on RockAuto and they have NGK Iridium plugs that are supposed to be compatible with the 4th gen V6. Everything I've heard about NGK Iridium is that they are high quality and last a long time.

So would using them extend the interval, or should plugs still be changed out after 30k miles?

Not all iridium plugs are "long life" plugs, read the "Basic Service Life" page from Denso's website, I'm sure NGK iridium plugs would be similar, so if you go that route make sure you get a "long life" iridium plug!!

Service Life | Basic Knowledge | SPARK PLUG | Automotive Service Parts and Accessories | DENSO Global Website

Bumbo 08-22-2019 04:33 PM

I almost went with Iridium plugs on my V6 but after reading other people’s comments/opinions/experiences I opted to just follow the service manual and get the standard copper Denso plugs.

The process was so straight forward and easy that to change every 30k really didn’t seem like a big deal to me.

lightfreak 09-11-2019 10:24 AM

I ran NGK Laser Iridium plugs for 160K Km and they looked pretty good when I pulled them. I changed them anyway, and plan to go another 100K miles. Not sure why others are having issues. I know there's a lot of fakes out there so try buying from a reputable source like RockAuto. Under $10 each


I use a 18" 3/8 socket extension when changing them , removing the plugs on the driver's side firewall is a breeze with it. You can also use this same extension to lower your spare tire.

Make sure the coil connectors catch and lock when you slide them back on. Gently tug on it and see if it comes loose.

xyzzy 12-08-2019 03:15 PM

Being as I recently picked up a new 2019 TRD ORP, and that I'm also new to late model Toyotas, I have been spending time with the owners manual and maintenance guide.

The maintenance guide says the OEM Denso SK16HR11 gets its first replacement at 120,000 miles or 12 years, which ever comes first.

As an aside, it looks like there might be some past history with propeller shafts coming loose - the maintenance guide says the bolts on it should be re-torqued every 15,000 miles/18 months... and every 5,000 miles/6 months if you tow, use a car-top carrier, haul heavy loads, drive on dirt roads, dusty roads, or roads that had salt applied to them.


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