Why does Na Zhijie's car run weak and its power drops?

It may be that there is too much carbon in the throttle and intake pipe, which leads to insufficient intake air and insufficient gasoline combustion, and the power can't keep up naturally, which will increase fuel consumption to a certain extent. The nozzle is blocked, resulting in poor fuel atomization effect or no fuel injection at all. Resulting in cylinder loss, thereby reducing the output power of the engine.