Toyota Tundra fuel tank valve sticks closed preventing refueling on Toyota Tundra

Some Toyota Tundra owners report experiencing issues with the fuel tank valve sticking closed, which can prevent refueling. This problem may be linked to the roll-over valve in the fill spout becoming stuck when the tank is full, obstructing fuel flow. Additionally, a flap or cover in the fuel filler tube could hinder hose insertion, complicating the refueling process. Some owners have found that the spring-loaded flop valve may not seat properly, especially on rough roads, causing it to become lodged in the fill pipe. In certain cases, the valve may get stuck due to machining discrepancies or excessive play in the hinge, similar to a toilet flapper, requiring manual intervention to operate. To address these concerns, it is recommended to check for obstructions in the roll-over valve and flap, inspect the flop valve for proper seating, and ensure the venting system is clear to facilitate smooth refueling.