What Causes the Engine to Smell Bad?
1 Answers
Engine odor is caused by the evaporation of anti-corrosion coatings and oil stains on the engine's external surfaces when heated. Specific reasons: After running for a while, the engine's external surfaces become very hot, especially components like the exhaust pipe, which are treated with various anti-corrosion coatings, including primers. These coatings initially evaporate when heated, releasing a pungent smell. Additionally, if there are oil stains on these components, they will also evaporate when heated, producing odors. Furthermore, the engine compartment contains many plastic parts and decorative panels, which can also emit odors when heated. Solutions: Over time, such odors will disappear as the evaporable substances have already evaporated.