What Causes the Smell of Gasoline During Cold Start?

[VonSadie]

The reasons for the smell of gasoline during cold start are as follows: 1. The smell of gasoline during cold start may be due to an oil leak somewhere. Consider whether the car has experienced a significant collision. Generally, car owners can check to determine if the car's fuel tank is leaking by observing whether there are oil drips on the ground where the car is parked or nearby. 2. It may be caused by a faulty fuel injector. If the fuel injector malfunctions, gasoline cannot be fully atomized during cold start, leading to incomplete combustion, which results in a stronger gasoline smell in the exhaust. 3. During cold engine starts in winter, due to the cold weather, ignition is more difficult. This causes some gasoline to be expelled through the exhaust pipe, resulting in a gasoline smell, which is a relatively normal phenomenon. 4. After the car is turned off, some gasoline may not have fully burned. Since the car is shut off, the evaporated gasoline fumes linger inside the vehicle, also causing a gasoline smell.