Why does the fuel gauge show not full when the tank is actually full?

1 Answers
DiAdelyn
07/30/25 1:15am
The reasons why the fuel gauge shows not full when the tank is actually full are as follows: 1. The tank was not actually full to begin with, and the fuel nozzle stopped because gasoline vapor caused it to stop; 2. If the fuel gauge often shows not full when the tank is full, it indicates an internal problem with the vehicle, commonly a faulty float in the fuel pump; 3. The fuel tank sensor is malfunctioning, in which case the sensor needs to be replaced. More related information is as follows: 1. The fuel tank is divided into two parts, a main tank and a secondary tank. 2. Each part has its own fuel level gauge, and the two gauges are connected in series. The fuel gauge displays the average of the remaining fuel in both parts. Poor contact between the main fuel level sensor and the secondary fuel level sensor can cause the above phenomenon.
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