Different Types of Car Smoke Explained | Black, White & Blue Smoke Ever noticed smoke coming from your car’s exhaust and wondered what it means? Not all smoke is the same — each color points to a different problem. 🔹 Black Smoke – Usually caused by excess fuel, dirty air filters, injector issues, or sensor problems. 🔹 White Smoke – Can indicate coolant entering the engine, head gasket issues, or condensation (normal during cold starts). 🔹 Blue Smoke – A sign that engine oil is burning, often

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Obturator sign and psoas sign