Why is there a gasoline smell when the car just starts?

[Adams]

The reasons for the gasoline smell when the car just starts: 1. Under very low external temperatures, when the water temperature and exhaust pipe temperature are low, combined with the cold start of the engine in winter when the external temperature is too low, the mixture is richer, so some of the mixture cannot fully combust and is directly discharged from the exhaust pipe, leading to a noticeable gasoline smell. This is a normal phenomenon. 2. It may be due to issues with the carbon canister or the carbon canister solenoid valve, causing the mixture to be too rich during startup. 3. If the local temperature is low and there is excessive carbon buildup inside the engine, leading to poor mixture atomization, this phenomenon can also occur. 4. If the solenoid valve remains closed, the gasoline vapor in the carbon canister will accumulate more and more, eventually filling the entire canister, and the excess vapor will escape into the atmosphere, resulting in a gasoline smell. 5. There may be leakage in the fuel injector, causing the mixture to be too rich, and the unburned mixture will be discharged from the exhaust pipe, leading to a strong gasoline smell.