So remember people are just trying to help you and want as many details as possible. There's no such thing as too much information for people who know what they are doing and want to diagnose problems and eliminate different possibilities. It might help for people to know if this only happens when the car first starts, when it's at certain speeds, once you turn it off, on only cold days, etc etc. You started your post without even saying what color the smoke was and where it was coming from (two very critical detail). Probably any other details you can fill in will help in some way. Either that or enjoy not knowing or dropping your car off at the shop.

 

check the fuel breather valve.i had the same problem before,and after this part replacement the car was ok agian.the scanner shows different codes of misfire that needed reset.do u feel that the RPM fluctuates a little bit?
good luck