Why it's important not to miss a car exhaust color change

The color of the exhaust gases eloquently tells an understanding person about the condition of the car's engine. Knowing the reasons for the change in the color of the exhaust, you can prevent a serious breakdown or drop the price when bargaining if you choose a car in the secondary market. The AutoVzglyad portal tells what the color of the exhaust says.

The cause of black exhaust from gasoline engines may be a malfunction of the ignition or injection system. In the first case, the culprits may be candles, on which a strong soot has formed. Also, tarry thick smoke may indicate a malfunction of the power supply or injection systems. In particular, troubles can come from fuel injectors clogged with deposits, which begin to pour rather than spray fuel into the combustion chamber. You should also check the mass air flow sensor. If it fails, then the ratio of fuel and air in the mixture will not be optimal.

White steam tells about excess moisture in the exhaust system. With a poorly warmed-up engine, the vapors, having passed the path from the combustion chamber to the exhaust pipe, have time to condense into fog. Hence the steam. But if white clubs are falling from the pipe, it's bad. This could indicate a blown head gasket. The cylinders are choked with coolant and, like a pump, antifreeze is driven into a red-hot exhaust manifold.

The blue color of the smoke will tell you that there are engine oil particles in the exhaust gases. And if the engine also has a “maslozher”, an ambulance “capital” of the power unit is guaranteed. Moreover, the denser the bluish fog, the more serious the repair will be. Trying to fill the oil thicker will not work. Perhaps the point is the wear of the piston rings or valve stem seals.

If we talk about a diesel engine, then such engines are much more prone to black exhaust. After all, there is always soot in the exhaust gases of a heavy fuel unit. To reduce it in the exhaust, put a particulate filter. If it clogs up badly, a long plume of black smoke will follow the car.