Ford Thunderbird gasoline vapor leak issue with engine light activation when fuel tank is full on Ford Thunderbird

Some Ford Thunderbird owners report experiencing gasoline vapor leak issues that trigger the engine light when the fuel tank is full. These issues may include hidden gasoline leaks in the engine bay or undercarriage that do not leave visible signs due to rapid evaporation. Additionally, a micro leak near the top of the gas tank can lead to dripping fuel, resulting in stains and engine light activation under certain conditions. Some owners have noted intermittent engine codes related to minor vapor leaks that saturate the vapor canister, causing the engine to intake more fuel than expected. Furthermore, leaks from the top of the tank when full, which cease after a few minutes and do not occur while the car is running, may indicate specific fuel system problems. Other concerns such as vapor lock, irregular engine pace, and engine stalling when hot could also be linked to these fuel system issues. It is recommended that owners conduct a thorough inspection of the fuel system, including the gas tank, fuel lines, and vapor canister, to identify and resolve any leaks or malfunctions contributing to these problems.