Why Is There a Gasoline Smell When Starting a Cold Engine?

[VanGeorge]

Cold start gasoline smell may be caused by an oil leak somewhere or a faulty fuel injector. If the fuel injector is malfunctioning, gasoline cannot be fully atomized during a cold start, leading to incomplete combustion and resulting in a stronger gasoline smell in the exhaust. Additional Information: 1. If there is a leak in the car's fuel tank or fuel lines, consider whether the car has experienced a significant collision. Generally, owners can check for fuel tank leaks by observing whether there are oil drips on the ground where the car is parked or nearby. 2. Sometimes, during a cold engine start in winter, it may be harder to ignite due to the cold weather. This can cause some gasoline to be expelled through the exhaust pipe, resulting in a gasoline smell, which is a relatively normal phenomenon. Additionally, after the car is turned off, some unburned gasoline may remain. Since the car is in a closed state, the evaporated gasoline fumes can linger inside the car, also causing a gasoline smell.