I've got a '97 cobra with about 124000 miles on it. Every once in a while when i start it up the last couple days it puffs out this white smoke. It doesn't smoke while i'm driving just when i start it or once when i turned it off. The oil is good because i just checked it. Any ideas.

 

Thats perfectly normal. Condensation builds up in your exhaust when the car sits, when you start it up it vaporizes into steam, and viola theres your white smoke.
-P.

 

it could also be worn valve seals or a leaking injector leaking gas down the valve stem cleaning the oil off on top of the piston. This will burns off when you first crank it after a while. No big deal though.

 

normal just build up getting pushed out. Dont sweat it