White exhaust is usually indicative of antifreeze in the combustion chamber, BUT, that's not 100%. If you have a coolant leak to a cylinder, it will be most noticeable on a cold startup. Have you had any significant coolant loss recently? That usually an indicator. Coolant doesn't evaporate, it has to be going somewhere. Hope this helps, let me know.
Monday, April 13th, 2009 AT 1:33 PM