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Black smoke is excessive fuel, or "rich." It is probably flooding out at idle. Either the floats in the carb, or the needle, and seat.

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Q: Why does my Chevy 350 smoke black then smooths out?
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Why does a Chevy 350 eng smokes black?

Black smoke means access gasoline, it's running rich.


Why does your 94 Chevy 350 smoke bad at idle?

Blue smoke = Burning oil Black Smoke = Overly rich fuel/air mixture White Smoke = Coolant entering the combustion chamberBlue smoke = Burning oil Black Smoke = Overly rich fuel/air mixture White Smoke = Coolant entering the combustion chamber


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Why does my 350 Chevy smoke all the time?

This depends on the color of smoke it is making. Blue smoke probably means that your engine is burning oil and is in need of a rebuild. If it is white smoke it means there is water or coolant getting into your engine which may mean that the head gasket is leaking.


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