white smoke blowing out of exhaust pipe
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2003 Chevrolet Silverado 2500 HD Question: white smoke
Answer #1patrick mannion from Greg Solow's Engine Room, January 17, 2011, 21:37Master
Light colored smoke out the exhaust is normal until the engine warms up, especially noticeable on cold mornings dense air. Blueish/gray smoke is a sign an engine is "burning oil", excessive black smoke would be a sign an engine is running to rich/too much fuel is entering the engine. White steam perhaps noticed with a slightly sweet odor from the exhaust, rough engine running, over heating and or coolant loss would be a sign of a blown or mildly blown head gasket.