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

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Old 03-18-2009, 11:51 PM
Disco Fuego's Avatar
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Question 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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Old 03-19-2009, 12:42 AM
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ok, loosened them to 15 just in case. Anybody know what it really should be, let me know...

Thanks!!
 
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Old 03-19-2009, 10:02 AM
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I went 15 according to Rave.
 
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Old 03-19-2009, 08:57 PM
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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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Old 03-19-2009, 09:22 PM
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Put em in till they strip - then back em off a quarter turn - Ha!
 
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Old 03-19-2009, 09:56 PM
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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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