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^Your spark plug in that picture is in the range I like to call "factory good", which is how my Goldwings factory tuning is, along with many other bikes. It's in a safe range, but leaning very much toward the lean side of things. It's getting hot enough that the ceramic/electrode are getting cleaned almost back to white with just the slightest hint of tan. You could actually go a little richer and be ok. I have my Hawk tuned on the opposite end of the "good" spectrum, just a little rich but still stays clean. Closer to a light brown than a light tan covering the ceramic and electrode.
The real question is, at what throttle position is the plug getting in that condition? Was that after a WOT plug chop, or at low speed/idle?
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11-10-2017, 01:00 AM
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