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IF it is actually smoke, then that suggests that engine crankcase lubricating oil is getting into the combustion chamber(s), most commonly caused by worn oil rings on the piston(s), or worn valve stem guides. On the other hand, what appears to be smoke could be nothing more than than the water vapor [a byproduct of the burning of the fuel] in the exhaust gas which condenses upon contact with the cooler outside air. This generally occurs when the outside air temperature is cool, or cold, before the engine warms up to normal operating temperature.

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15y ago
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Q: Why does white smoke come out of the tailpipe on your 1994 Mercury Sable?
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