Why does the car fail to start after refueling?

[Alexandra]

The reasons why a car fails to start after refueling are as follows: 1. Vapor lock: Gasoline evaporates very quickly under high temperatures. If the car frequently operates with low fuel levels in high-temperature environments, vapor lock can form in the fuel lines, leading to unstable engine operation, stalling, and difficulty starting. 2. Damaged charcoal canister: The charcoal canister's function is to absorb gasoline vapors generated in the fuel tank, thereby reducing vapor emissions. If the tank is overfilled, gasoline may splash into the canister, saturating the activated charcoal with fuel and causing it to fail. 3. Insufficient fuel supply: Gasoline expands easily in hot weather. Overfilling the tank can create negative pressure inside, leading to insufficient fuel supply and subsequently affecting the car's ability to start.