Black, Blue or White Smoke? What Your Car’s Exhaust Is Telling You

Car driving toward snow-capped mountains on sunny day.

The exhaust smoke colour meaning helps diagnose engine problems quickly: black smoke usually indicates too much fuel (rich mixture), blue smoke suggests burning oil, and white smoke may point to coolant entering the engine or harmless condensation. Identifying the colour early helps prevent more serious damage. Black smoke means excess fuel, blue smoke means oil […]