When the car has generated the smell of rotten eggs (H2S), the main cause usually comes from a malfunctioning car exhaust converter. Because then, sulfur gas will be spilled into gasoline and create extremely toxic H2S (at concentrations above 25 ppm can be fatal). But due to a problem with the flue gas converter at that time, re-filtering the H2S was completely impossible, leading to the vehicle’s exhaust emitting the smell of rotten eggs.

The smell of burning oil

The smell of burning oil is often caused by a direct leak from the combustion chamber, which makes the combustion not optimal. From there, it will make users feel an unpleasant smell like burning oil or more smoke.

Smell of diesel engine

This is a typical case of diesel engine vehicles. Since the burning of a diesel engine as well as the engine power of a diesel-fueled vehicle is usually higher than that of a gasoline, you will feel a stronger diesel smell when you drive on gasoline.

The smell of gasoline in the exhaust gas

If there is a smell of raw gasoline in the smoke, it means there is a problem in the car’s carburetor. At that time, more gasoline will enter the carburetor than usual, leading to the fact that gasoline and oxygen do not follow a predetermined ratio and causing the combustion in the chamber to not go as planned. From there, in the exhaust of the car, there will be a stagnant smell of gasoline because the combustion is not completely efficient.