Spark plug torque: 15 or 21?? Help...

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03-19-2009 | 12:51 AM

Disco Fuego

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Rock Crawling

Joined: Jan 2009

Posts: 254

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From: Los Angeles, CA

Spark plug torque: 15 or 21?? Help...

RAVE says 15 lbf.ft, but my Bosch Platinum 4+ say 21 lbf.ft. I set them at 20, but is that too tight??

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03-19-2009 | 01:42 AM

Disco Fuego

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Rock Crawling

Joined: Jan 2009

Posts: 254

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From: Los Angeles, CA

ok, loosened them to 15 just in case. Anybody know what it really should be, let me know...

Thanks!!

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03-19-2009 | 11:02 AM

okdiscoguy

Camel Trophy

Joined: Feb 2007

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From: Tulsa, OK

I went 15 according to Rave.

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03-19-2009 | 09:57 PM

Spike555

Team Owner

Joined: Jun 2007

Posts: 26,212

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From: Grand Rapids MI

Just good and tight.
I have never torqued spark plugs, never.
Just crush the washer and then go another half turn or so.

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03-19-2009 | 10:22 PM

Night Train

Rock Crawling

Joined: Nov 2008

Posts: 409

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From: West Virginia

Put em in till they strip - then back em off a quarter turn - Ha!

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03-19-2009 | 10:56 PM

roverguy7

Pro Wrench

Joined: Apr 2008

Posts: 1,475

Likes: 35

tighten them back up. 15 would have been fine, but now that youve loosend them, the little crush washer is a little collapsed, over time theyll begin to back out

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