Most of the time, you probably don’t pay much attention to what comes out of your vehicle’s exhaust. But if you suddenly notice thick or unusually colored smoke, your car may be giving you an important clue about what’s happening under the hood.
The color of the exhaust can help narrow down the potential problem, although a professional diagnosis is the best way to determine the actual cause.
White Exhaust Smoke
A small amount of thin white vapor when you first start your car can be completely normal, particularly on a cool morning. This is typically condensation in the exhaust system and should disappear as the vehicle warms up.
Persistent, thick white smoke is different. It may indicate that coolant is entering the combustion chamber. Possible causes include a damaged head gasket or another internal engine problem. Because coolant loss can lead to overheating and engine damage, this symptom shouldn’t be ignored.
Blue Exhaust Smoke
Blue or bluish-gray smoke usually indicates that the engine is burning oil. Worn piston rings, valve seals or other internal components may allow oil to enter areas where it shouldn’t be.
You may also notice declining oil levels between oil changes. Continuing to drive while the engine burns significant amounts of oil can contribute to additional wear.
Black Exhaust Smoke
Black smoke generally means the engine is burning too much fuel. Problems with fuel injectors, sensors, the air intake system or other components can disrupt the proper air-fuel mixture. You may also notice poor fuel economy or changes in engine performance.
Pay Attention to Changes
Exhaust smoke alone can’t tell you exactly what needs repair, but changes in its color or volume are worth investigating.
If your vehicle is producing unusual white, blue or black exhaust smoke, schedule an inspection with Fox Run Auto. Our technicians can diagnose the source of the problem and recommend the appropriate next steps. Call us today at (302) 597-9205 or schedule your appointment on our website.