today me and some friends was rideing and we toke a break when break time was over i got on my bike and reved it and my friend noticed blue smoke comeing out the exaust. Not that much blue smoke comes out.

out of 100% 30% is blue smoke

what could be causeing my bike to smoke blue and how could i fix it.

 

with cars that means you need valve seals if it happens when you first start up after it was sitting