It's condensation not smoke, take it for a long drive, and put better gas in it, and a bottle of gas line dryer in it and then drive it. I used a lot of it in PA where the gas quality is low and has lots of water mixed in it. When it gets really cold the water in the gas freezes and plugs the fuel lines. The gas dryer takes the water out of the gas and eliminates that problem. And it's cheap. Maybe $6 bucks at your local gas station. Quit panicking, your engine is fine.