Why Does the Fuel Nozzle Keep Tripping?

1 Answers
AlanaLee
07/28/25 6:04pm
Fuel nozzles frequently tripping during refueling is generally caused by high air pressure, excessive fueling speed, or convoluted fuel pipe structure. High air pressure: Hot weather leads to increased air pressure inside the fuel tank, making fuel prone to splashing out during refueling, which triggers the automatic tripping of the fuel nozzle. Excessive fueling speed: Relatively fast fueling speed causes fuel splashing, leading to nozzle tripping. When the fuel level reaches the pipe opening, the fueling breather circuit gets blocked by fuel, causing fuel to accumulate in the fueling pipe. Convoluted fuel pipe structure: Overly twisted fuel pipe structures in the fuel tank can easily cause fuel spray and nozzle tripping. Welding issues after blow-molding of fueling pipes - while blow-molded products generally have good stability, welding often results in material overflow or misalignment, leading to narrow fuel flow channels.
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