What is the reason for the fuel gauge remaining in its previous state after refueling?

[DelAnthony]

It is recommended to drive a certain distance after refueling to test. If the fuel gauge still shows the previous state, then there may be a fault with the fuel level sensor, and further inspection and repair at a repair shop are required. Below is relevant information about the car fuel gauge: 1. Introduction: The car fuel gauge is designed based on principles of physical mechanics and electricity. From a mechanical perspective, the fuel level scale position in the fuel tank is determined using the theoretical knowledge of buoyancy (somewhat similar to the water tank in a household toilet). This value is then transmitted to a rheostat via a sensor, and different voltage values are obtained by sliding on the rheostat, which are then converted into the scale on the fuel gauge, i.e., the fuel gauge you see. 2. Types: There are two types of fuel gauges in use in vehicles, the pointer type and the digital type.