Why is there a strong gasoline smell when starting the car?

[VonKennedy]

The reasons for a strong gasoline smell when starting the car are as follows: 1. If the gasoline smell occurs during startup, it is quite normal. When a car starts cold, the ECU appropriately increases the fuel injection based on the intake air temperature and water temperature signals. At this time, the engine has not yet reached its normal operating temperature, and the fuel-air mixture cannot burn completely. A very small amount of unburned fuel-air mixture is expelled, which is why you smell gasoline. 2. Once the engine reaches its normal operating temperature of 80-90 degrees, the fuel-air mixture in the cylinders burns completely, and the gasoline smell will disappear. This situation is normal. If you notice a gasoline smell while driving, it might indicate that the engine has a misfiring cylinder, and unburned gasoline is being expelled through the exhaust pipe. When the car decelerates, the smell can enter the cabin.