Re: Any idea what would cause this?

Posted by barelycompetent on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Any-idea-what-would-cause-this-tp4039735p4039764.html

Thanks for the replies, now that Im thinking about it, I think the plug was black from carbon because it didnt wipe off, but there was a slight amount of oil around the threads of the plug.  Starting with the basics before I  go into pulling the head, replacing seals and lapping valves, the bike starts and sounds like it is running normally.  So if its a bad tune and the plug that is fouled is the number 4, does that mean that the number four carb is off, or could it be anyone of the carbs causing it?  Im still curious as to why its only the one cylinder, and I just noticed it yesterday, last thursdays bike night it ran great, until I ran out of gas on the highway and had to push it off the exit to a gas station.  Could that have had anything to do with fouling out the plug?  I appreciate the responses.