Li Xia n38A+ engine cannot refuel at high idle speed.

Check it with the computer. Look at the data stream. Looking at the ratio of throttle opening to speed, we can also see the opening voltage of solar terms. The range is about 5v to 0.5v. If the ratio is not appropriate. This is a fault of the throttle position sensor. The accelerator pedal position sensor works on the same principle as the accelerator. The working principle of the throttle position sensor is a sliding resistor. He can't keep up with the working voltage difference. One of the reasons for not refueling. As for high idle speed, one way to check it is to start the car first, and then block the throttle with your hand to see its speed. Whether it will stall. If there is any explanation, it is that the intake branch pipe is leaking. There is also a sensor failure in the air intake system, which leads to computer control failure. Look at the data on the computer and talk.