Why is there a gasoline smell inside the car when starting it?

[Travis]

The following are the reasons for the gasoline smell inside the car when starting it: 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, the mixture is richer, and some of the mixture cannot burn completely, being directly discharged through the exhaust pipe, which results in a gasoline smell. This is a normal phenomenon. 2. It might 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, a gasoline smell may 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 gasoline vapor will escape into the atmosphere, also causing a gasoline smell. 5. There might be leakage in the fuel injector, resulting in an overly rich mixture, and the unburned mixture will be discharged through the exhaust pipe, thus causing a gasoline smell.