Spark plugs - Toyota FJ Cruiser Forum
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post #1 of 14 (permalink) Old 03-18-2017, 01:22 PM Thread Starter
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Spark plugs

Hey guys I have an 08 FJ and was wondering what you guys think about Bosch double platinum plugs? Thats all they had at the store and couldn't find any reviews on them. Thank you
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post #2 of 14 (permalink) Old 03-18-2017, 02:57 PM
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Re: Spark plugs

Short answer, Bosch plugs absolutely SUCK. Use ND or NGK only.

Just use standard plugs, platinum one's don't work as well as the cheaper one's.
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post #3 of 14 (permalink) Old 03-18-2017, 05:06 PM
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Re: Spark plugs

I replaced the plugs in my 07 with NGK Iridiums. Some folks here will tell you to stay away from the Iridiums on the 07-09 FJ's (OEM is copper plug) but I did mine about 20,000 miles ago and no issues whatsoever.

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post #4 of 14 (permalink) Old 03-18-2017, 05:12 PM
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Re: Spark plugs

Quote:
WebSnyper previously said: View Post
I replaced the plugs in my 07 with NGK Iridiums. Some folks here will tell you to stay away from the Iridiums on the 07-09 FJ's (OEM is copper plug) but I did mine about 20,000 miles ago and no issues whatsoever.
I'm one of them.

I tried them fancified high falutin uber spark plugs and the FJ ran like sh!t.

Moved back to copper core plugs as per the manual and the FJ has been purring like a fat cat.

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post #5 of 14 (permalink) Old 03-20-2017, 01:50 PM
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Re: Spark plugs

After much research last summer I replaced mine with factory plugs. Too many bad reviews on alternative plugs.
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post #6 of 14 (permalink) Old 03-20-2017, 02:47 PM
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Re: Spark plugs

With 20+ years of Engineering and another 10 in automotive repair, I am inclined to say Denso is the best overall, then NGK & Bosch, then AC-Delco. This is based on experience and ratings. Best Spark Plugs ? Compare Reviews and Ratings | Bestcovery Not that this link is a definitive or reliable.

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post #7 of 14 (permalink) Old 04-12-2017, 06:22 PM
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Re: Spark plugs

Anyone know or remember which plugs go on which side
Denso's

NGK. I can't remember
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post #8 of 14 (permalink) Old 04-12-2017, 07:19 PM
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Re: Spark plugs

Meh, not worth the extra over the factory recommend plugs. The copper plugs need to be changed every 30k however.
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post #9 of 14 (permalink) Old 04-13-2017, 12:40 PM
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Re: Spark plugs

Quote:
WebSnyper previously said: View Post
I replaced the plugs in my 07 with NGK Iridiums. Some folks here will tell you to stay away from the Iridiums on the 07-09 FJ's (OEM is copper plug) but I did mine about 20,000 miles ago and no issues whatsoever.
Magnuson/TRD Supercharger kit includes Denso Iridium plugs (IKH22). Just ordered Denso Iridium Tough (with Platinum) plugs (VKH22), these should be better for CNG use.

2007 FJ Cruiser 6M/T Black Cherry CNG TRD Supercharged
My buildup thread
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post #10 of 14 (permalink) Old 04-13-2017, 05:17 PM
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Re: Spark plugs

It is to my knowledge. And I'm not by any means and expert
That the coils on the 4.0 voting motor do not produce enough electricity for the iridium plugs to work properly

Please correct me. If I'm wrong.

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