Why does the Zhonghua Junjie feel sluggish and lack power during acceleration?

[MacNolan]

Zhonghua Junjie acceleration sluggishness and lack of power may be caused by the following reasons: Carbon deposit issues: Carbon deposits here include cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits, etc. These areas are closely related to the engine's power output. When there is excessive carbon buildup inside the engine, the vehicle's ignition energy decreases, intake efficiency declines, ultimately leading to reduced engine power and symptoms of sluggish acceleration with muffled sounds. Fuel system problems: Using incompatible fuel grades (for example, using 90 octane instead of 93 octane) can cause decreased vehicle output power and reduced performance. Alternatively, if the fuel tank vent hole is blocked, or if components such as the fuel tank switch, fuel filter, or fuel lines between the tank and carburetor are partially obstructed, it may fail to supply the required fuel quantity, resulting in an overly lean air-fuel mixture and weak engine acceleration.