need help trying to figure out why my 91 suzuki lt 250 4x4 smokes blue untill it gets hot.I have no running problem,plug fouling,or need to and oil on a reg basis.this quad is used in the summer to push a sprint car around at the race track.this condition is not consistant,sometimes no sign of problem at all and sometimes it looks like it's blowing up!!oil level is always between the marks on sight glass.have looked in air box and intake piping w/no sign of oil. I would think if I had a ring,cyl. or seal problem it would be more consistant? any good recomendations to diagnose or if anyone has had a similar issue please respond. thanks

 

Sounds like bad rings until they heat up and expand.