What Causes Smoke from the Exhaust Pipe with a Burnt Smell?
1 Answers
White smoke from the exhaust pipe is generally normal, but if it appears in large quantities, it may indicate a faulty engine piston that has started burning oil. As for the smell, it is usually caused by the release of odor from the silicon material inside the catalytic converter when heated, which is also normal. However, if the pungent smell becomes increasingly strong, it is advisable to have it inspected and repaired at a service center. Below is more related information: 1. Normal white smoke: Normal white smoke occurs because the exhaust gases exiting the pipe are at a high temperature, causing the high-temperature water vapor to rapidly condense into tiny droplets in the cooler air, resulting in "white smoke," which is physically known as liquefaction. If there is a large amount of white smoke, it could be due to a damaged engine piston burning oil. 2. Excessive moisture: If there is too much moisture in the gasoline, it is recommended to clean the throttle body. If the gasoline contains water, check for leaks at the junction of the cylinder head and gasket. If leaks are found, it may indicate a damaged cylinder gasket. 3. White smoke in low temperatures: White smoke during cold starts is normal and should disappear as the engine warms up. However, if the smoke increases and persists when accelerating, accompanied by a worsening pungent smell, it is best to have it inspected and repaired at a 4S shop.
