The plug has some use,but the key is its relative to how the bike was ridden last/rider style.a lot of puttering will darken,look rich/a wot run right before pulling plug will show a greyer/hot/drier leaner looking plug.
Pay attention to where the problem areas are-pilot=0-1/8 with a small affect to 1/4.main=3/4 to wot.needle type/clip=everything in between.
With that needle the best youl likely get is ok 0-1/8,blubber 1/8-1/4,then whack,clean mid hit to wot.
The blubber just before the hit makes it difficult in tight technical stuff.if you ride wot/fast the mid to top hit is fine,but when you roll on/off it may burble then hit.changing needle type will help get a smoother transition
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2013 ec200r
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