Delong m3000 can't breathe. What happened?

Delong m3000 can't refuel because the electronic accelerator pedal is damaged, the accelerator is too dirty, the air intake is insufficient, the engine has too much carbon deposit, the gasoline pump pressure is insufficient, and the intake pressure sensor is damaged, which will all lead to refueling failure. The following are the related problems of automobile refueling failure: 1. Reasons for the failure of automobile refueling: clutch slipping, poor oil quality, carbon deposition on the accelerator and too heavy automobile load. 2, car jitter: the car is still shaking because of the lack of engine cylinder, which will lead to insufficient fuel power. The exhaust gap of the exhaust pipe is obvious, shaking violently and making a sudden noise like a tractor.