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Old 02-01-2016, 11:10 PM   #8
toolboxchev
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Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
Re: Yet Another Spark Plug Question

Quote:
Originally Posted by Grumpy old man View Post
Sparkplugs will only give back what the installer gives them ...INDEXING.. other than that you could run 8 different brands of the same heat range and not see a difference .
I can plainly see that by looking at my plugs. How does one go about doing this professionally?

Other than *&%$&^# Google?
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