carthy111 Posted February 9, 2016 Report Share Posted February 9, 2016 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 Quote Link to comment Share on other sites More sharing options...
michael_t Posted February 9, 2016 Report Share Posted February 9, 2016 http://www.thumpertalk.com/wiki/_/why-spark-plugs-can-make-or-break-your-bike-r357 Quote Link to comment Share on other sites More sharing options...
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