Blue smoke from the exhaust is why? What is blue smoke coming from the exhaust? Blue smoke from the exhaust …..Causes and solutions
Blue or dark-colored smoke coming out of your vehicle’s exhaust is a sign that the engine is burning oil. It could be wear to the pistons, oil rings, valve rubber deformation, malfunctions or leaks in turbo system over time. Blue smoke is produced when the crankcase ventilation valve’s PCV valve is in its closed position. A damaged cylinder head gasket also causes oil to get mixed with the combustion chamber, which results in the engine burning oil.
Blue smoke should not mixed with the exhaust fumes when the vehicle is started for the first time. The vehicle will emit white smoke after it is started. It is caused by water collected in the exhaust from the vehicle while it is parked, moisture and so on. It disappears once the engine heats up. Sometimes, the car’s exhaust emits blue smoke that smells like it is heating up.
You can check the oil level if you suspect the engine is burning oil. Pull the dipstick at regular intervals. Add oil to the engine if it isn’t. An oil-burning motor blows. Check for oil leakage by opening the oil fill cover. A compression test is performed to determine worn pistons or rings if you cannot be certain that the vehicle is burning any oil.
Over time, engine oil can contaminate the oxygen sensor and catalytic converter. The malfunction lamp is then activated. The oil level in the engine will drop and the oil pressure will decrease. Low engine oil can lead to serious damage to your vehicle and high repair costs.
