Originally Posted by zzzzzeke
isn't white smoke usually from coolant
Yes and no. I had white smoke once too... Turned out to be the interanl element from my catalytic converter.
Are you loosing any coolant? If not, hold a piece of cardboard (or something like it) behind the exhaust pipe and have someone rev the engine up and down for a minute or two. Watch for anything comming ou tht pipe. If it sticks to the cardboard it is probably moisture such as coolant. If it bounces off the cardboard it may be the element from inside your converter.
Just something to try....