Thunzie
XS650 Member
Hi folks. I'm new here and I come seeking advice on a problem thats recently surfaced which hass me doing some head scratching. I have a 79 model XS650 which I have hard tailed. Running VM34's and straight pipes. The bike has been running fine in this configuration for quite some time but over the past few weeks, from a cold start I'm getting a very light grey colored smoke out the right side exhaust and it's also fouling plugs on that side now. If I start the bike and let it just sit there idling to warm up it will foul that right side plug, but I've found that if I keep the revs up enough while the motor reaches operating temp, then go for a bit of a ride to really get the motor at normal riding temp there's no more smoke, all is normal.
Yesterday I put in brand new plugs, went for a ride and everything was perfect but I decided to look at the right side plug after the ride and sure enough, it was a little wet. Hard to say if its fuel or oil wet though, there wasn't enough of it but from a sniff I couldn't smell fuel.... so I'm guessing oil... guessing.
Yesterday I put in brand new plugs, went for a ride and everything was perfect but I decided to look at the right side plug after the ride and sure enough, it was a little wet. Hard to say if its fuel or oil wet though, there wasn't enough of it but from a sniff I couldn't smell fuel.... so I'm guessing oil... guessing.