So the symptoms are: When I start up the car there's smoke but too much just an annoying amount. But when I was driving to day it got really really bad. It was when I got stopped by a train. Before this I had driven it in town and on the freeway(about 10 miles). I decided to turn the car off and wait for the train to pass, but when i turn it back on and hit the gas I couldn't even see the car behind me

Help.
Thanks