February 9, 201610 yr I took my spark plug out today day and it's got black wet (sort of oily) residue on, can anybody tell me what the problem is? My bike is a 2008 beta Rev 3
February 9, 201610 yr http://www.thumpertalk.com/wiki/_/why-spark-plugs-can-make-or-break-your-bike-r357
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