What Causes a Strong Gasoline Smell?

[FinleyAnn]

When a car emits a strong gasoline smell upon starting, it is mainly due to the following reasons: 1. Incomplete combustion of gasoline: A heavy gasoline smell after starting the car, which disappears after the engine warms up, is a normal phenomenon. This occurs because the combustion efficiency is poor when the car first starts. During a cold start, the water temperature and exhaust pipe temperature are low, leading to a richer air-fuel mixture. As a result, some of the mixture does not burn completely and is expelled through the exhaust pipe, causing a noticeable gasoline smell. 2. Aging rubber hoses: Rubber hoses in the engine compartment can deteriorate over time, especially in older vehicles. Once they age, gasoline may leak into the engine compartment, and the air conditioning system can draw the smell into the cabin. Therefore, aged rubber hoses should be replaced promptly. 3. Leaking gasoline pipe connections: If the connections in the gasoline pipes develop leaks, gasoline fumes can enter the cabin through the air conditioning system. If you detect a gasoline smell inside the car, it is advisable to inspect the connections in the gasoline lines.