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Hi, I just changed my sparkplugs on 2010 850, one plug was tan in color the other a dry black. The bike has been running good. Any ideas for the different colors
 

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I'm no expert but I asked a similar question for my sporty 800 and the answer I got was the injector could be not spraying correctly. As the computer controls the efi it should be good by itself. Hope that is a little help.
 

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Yes,.......I run SeaFoam regularly
 

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X2 on an injector cleaner. It sounds like one injector may have something on the pintle & may not be fully closing.
 
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