A car's exhaust smoke color indicates specific engine problems: black smoke means too much fuel is burning, blue smoke indicates engine oil entering the combustion chamber, white smoke suggests coolant leaking through a damaged head gasket, and gray smoke may come from a clogged PCV valve; early diagnosis prevents serious engine damage.
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Exhaust Smoke Colors Explained Black, Blue, White & Gray Smoke CausesAdded:
Your car's exhaust smoke can reveal engine problems. Black smoke means too much fuel is burning. Blue smoke means engine oil is entering the combustion chamber. White smoke often means coolant is leaking through a damaged head gasket. Gray smoke may come from a clogged PCV valve. Check it early before serious engine damage happen.
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