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Can your spark plug tell you..

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Old 06-15-2007, 07:37 AM
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Default Can your spark plug tell you..

Say you take your plug out and it is really balck,does that mean not enough air flow or something else??
 
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Old 06-15-2007, 10:11 AM
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Default Can your spark plug tell you..

do a google search on spark plugs and you"ll find some pictures of what it should look loke. Real black whould mean it's rich. It should have a black soot ring around it and a tan electrod.
 
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Old 06-15-2007, 11:10 AM
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Default Can your spark plug tell you..

Here are a couple links for you.

http://www.dansmc.com/Spark_Pl...rk_Plugs_catalog.html

http://www.verrill.com/moto/se...gs/plugcolorchart.htm


If you do a sparkplug chop (cut-away) then the base of the porcelan should be a medium brown.
 
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Old 06-15-2007, 11:31 AM
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Default Can your spark plug tell you..

<div class="FTQUOTE"><begin quote>Originally posted by: toddmh

Say you take your plug out and it is really balck,does that mean not enough air flow or something else??</end quote></div>

Yes, and yes. Yes in that it needs more air, yes it is rich and needs a smaller jet.
Go to the Arctic Cat forum and look for 'Air-jetting' it could help you without going to a smaller main jet.
 
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Old 06-15-2007, 07:51 PM
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Default Can your spark plug tell you..

Thanks guys ..
 
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Old 06-16-2007, 12:50 PM
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Default Can your spark plug tell you..

There is no such thing as too little or too much air. You control air flow with your right thumb.
Now; there is such a thing as too much fuel or not enough fuel for the amount of air running through the engine. This you will have to fix with a carb jetting change.
 
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