06-03-2015, 09:43 AM
just started working on an 82 cb900 custom I got last fall. turns over fine but would not start. tried starting fluid. stumbled a few times. noticed only cylinders 2 and 3 got warm. also noticed that one of the set of two plug wires going to the regulator/rectifier looks like they have been exposed for awhile. core of wires exposed and looking as if they have been exposed for quite awhile. and the covering is crusty and degraded. know the bike hasn't been on the street since 2006 but do not know the story of why it was parked so long ago. would a failed regulator/rectifier supply spark to just two of the cylinders or when it fails does the spark fail to all of cylinders? I see also the two sparks units mounted just above the reg/rec and assume that each of those controls two cylinders. not an expensive part but want to replace the correct part. any advice is appreciated.. little guy david