It is literally always hungry and massively obese, because the normal satiety signaling hormone â leptin â is absent from circulation. Researchers typically use the ob/ob mouse as a model for type II diabetes. When you inject an (obese) ob/ob mouse with leptin, it loses weight and its health markers normalize.
The tank pressure sensor is usually located on the top of the fuel pump assembly.
Mostly the caps have threads, which are fixed to the tank pipe with matching threads. A rubber gasket at the top gets compressed when the cap is fixed and stops the leakage of fuel. The gas cap has air vents to allow the air to enter into the tank for maintaining pressure.