What causes the motorcycle fuel gauge needle to fluctuate up and down?

[LeGianna]

Motorcycle fuel gauge needle fluctuating up and down may be caused by reasons such as new bike break-in period or needing to replace the sensor. New bike break-in period: During the break-in period, the fuel gauge may show fluctuating readings, which is normal. However, if this occurs in an older bike, it should be thoroughly inspected. Sensor needs replacement: If the fuel gauge suddenly drops to zero in a new bike, it indicates a sensor issue that can be replaced directly at the 4S store. For older bikes, timely cleaning is required. Additionally, try to use higher quality gasoline as it contains fewer impurities, which can reduce the probability of inaccurate fuel gauge readings.