i just put 2200.00 in having a motor put in my bike.got it from salvage yard.bike has been running good for the past couple of months since i had the motor put on.never has smoked.i took the secondarys out a about a month ago and it still didnt smoke.well last week it all the sudden started smoking.when its idling it dont smoke it starts when you give it gas and then clears up.basically if you sit there and blip the throtte it smokes when you do it.it is like a blue smoke.i took plugs out today cleaned them and put them back one plug was loose.there was no oil in the airbox.any ideals.thank you in advance