My Buddy has a 98 XR650L and I have a 96 XR 650L. Has anyone encountered a blue smoke at start up. Its happening on the 98 XR all stock . It is not a consistant problem ! sometimes it smokes in the morning sometimes it doesnt. clears up after about 8 seconds. Dealer top technician thought it was in the emulsifier tube in the carb so we took the carb all apart and of course it was clean and clear. The spark plug is burning perfect It cant be rings because it doesnt do it all the time.