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White, Blue or Black Smoke From the Exhaust: What Each Colour Means
Exhaust smoke colour isn't just a detail — it's close to a diagnosis by itself.
The symptom
Visible smoke from the tailpipe.
What's causing it
White smoke with a sweet smell usually means a coolant leak or head gasket issue. Blue smoke means the engine is burning oil. Black smoke means a too-rich fuel mixture or a dirty filter/injector.
What to do
White and blue smoke both need a professional diagnosis before anything gets replaced — guessing at parts here gets expensive fast.
Tell the GetAutoSure AI Mechanic the colour you're seeing for guidance.