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.
1 It pushes or pumps fuel from the gas tank to the fuel injector or carburetor.  It creates the proper amount of pressure to ensure that the right amount of fuel will be delivered to the engine, regardless of external conditions.