How often do you change your spark plugs? - TundraTalk.net - Toyota Tundra Discussion Forum
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#1 (permalink) Old 08-19-2011, 02:46 PM
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How often do you change your spark plugs?

I just did the 60k oil change. According to the scheduled maintenance it states to change spark plugs every [EDIT] 30k for emissions warranty. I'm not worried about that.
I've yet to change the plugs on my Tundra.
I have a 100 mile roundtrip off-peak daily commute, so most of my miles are highway miles at low revs. I do haul and tow occasionally, and also put a few miles off road on the ranch, occasionally in 4WD low.

So, time to change them? If so, anyone recommend a good brand?

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#2 (permalink) Old 08-19-2011, 02:49 PM
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Most new cars spark plug change at 100k miles

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#3 (permalink) Old 08-19-2011, 08:38 PM
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It's too damn hot for me to walk out to my truck and check the manual but I can't believe they say to change them at 15K. Like Sabbadoo said, most vehicles nowadays say 100K. I will have to check my manual after the sun goes down.

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#4 (permalink) Old 08-19-2011, 11:27 PM
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15K is excessive and completely unnecessary. If you have a 4.6L or 5.7L, it comes equipped with iridium plugs and the change interval is 120K miles.

They run about $12 a plug.



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#5 (permalink) Old 08-19-2011, 11:56 PM
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What was stated above. They are iridium plugs. If you refer to the scheduled maintenance guide. 120,000 is the date to replace.

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#6 (permalink) Old 08-20-2011, 02:54 AM
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BUT... it is a good idea to pull them out and put antiseize on them so as to prevent the ford spark plug issue... where they break off or pull the threads out of the head...


always a good idea. also antiseize the bolts that hold the coil on... my fj i was afraid to pull the bolt out @ 40k, i ended up trading it in, but it was a rusty bolt with aluminum oxidization around it too..


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#7 (permalink) Old 08-20-2011, 08:57 AM
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where do people keep reading they need to be replaced at 15k? is it really in the manual somewhere? I would not be surprised if it is actually printed in there somewhere.


I would check one of the plugs at 50k

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#8 (permalink) Old 08-20-2011, 09:14 AM
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where do people keep reading they need to be replaced at 15k? is it really in the manual somewhere? I would not be surprised if it is actually printed in there somewhere.


I would check one of the plugs at 50k
I believe it's the V-6 that has a 15k plug change interval.

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#9 (permalink) Old 08-20-2011, 09:38 AM
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V6 4 LITER engine like the 4th gen 4runner is every 30,000 miles, but visit that site and people have pulled them at 60,000 miles and they still look good.
And those are not iridium with NGK on one side and DENSO on the other from the factory. Go figure?
Wonder which is better DENSO OR NGK?
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#10 (permalink) Old 08-20-2011, 10:47 AM
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Originally Posted by EVOL ARDNUT View Post
V6 4 LITER engine like the 4th gen 4runner is every 30,000 miles, but visit that site and people have pulled them at 60,000 miles and they still look good.
And those are not iridium with NGK on one side and DENSO on the other from the factory. Go figure?
Wonder which is better DENSO OR NGK?
Not much difference between them< just make sure it is a jap plug going back in. Jap import vehicles dont agree with non jap plugs
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#11 (permalink) Old 08-21-2011, 01:05 AM
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Denso only for tundra.. But NGK only for anything else.

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#12 (permalink) Old 08-21-2011, 03:26 AM
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I replace mine when the change spark plugs light comes on.
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#13 (permalink) Old 08-21-2011, 05:05 PM
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Originally Posted by mendonsy View Post
I believe it's the V-6 that has a 15k plug change interval.
The service manual states every 30k, my mistake.
Its the 5.7L V8
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#14 (permalink) Old 08-21-2011, 07:30 PM
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You better read that again. It says (1GR-FE) which is the V6. The 5.7 is a (3UR-FE).

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#15 (permalink) Old 08-21-2011, 07:56 PM
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You better read that again. It says (1GR-FE) which is the V6. The 5.7 is a (3UR-FE).
Ah, OK. Thanks.
Not sure why they couldn't use the engine instead of a code.
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