Once the forklift stops refueling, it will also stop idling for a long time.

Is there something wrong with the throttle? When idling, the electronic throttle is closed, the air is bypassed by the throttle, and the throttle is controlled by the idling motor. However, when refueling, the idle motor is turned off and the air is taken out from the normal electronic throttle. If the electronic throttle doesn't turn on and off properly, and there is no oxygen in the car, it will definitely turn off. Take it out, clean it and put it back. Do not connect the air filter tube. Start the car and check whether the throttle valve opens and closes correctly.