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.
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Monday, April 13th, 2009 AT 1:33 PM