What is the reason why Fengyun 2 feels frustrated when stepping on the accelerator and putting it down?

According to the problem you described, the car has a sense of frustration, which is generally a problem of oil supply and power supply. Check the following two parts:

Power supply system: spark plug, high voltage package, if the high voltage is not good when speeding up, the engine will work intermittently. (suggested replacement)

Oil supply system: Nozzle, if there is carbon deposit in the nozzle, or the nozzle is slightly blocked, the fuel injection quantity of the four nozzles will not be consistent, which will easily lead to abnormal oil supply and a sense of frustration.