PLEASE HELP PEOPLE!!!!

Last night I started my car when it was getting cold. Sounded like a subaru then after couple seconds it fizzled and ran like normal. This morning it did the same and again after a few seconds was fine. After driving for about 8 miles on motorway I came off and stopped at lights. everything fine. next lights, everything fine. Third set of lights start sounding rough again so i pulled away slowly but this time it did not stop. I pulled up and turned engine off. Big puff of white smoke everywhere.

What can it be??

Water hose when last week but replaced it. Think there may still be bit of air in system. Would this be it??

Please help