What is the reason for the slow acceleration of Wuling Glory b 12?

The reasons for the weak acceleration of Wuling Glory b 12 are: 1, carbon deposit: carbon deposit includes cylinder carbon deposit, throttle carbon deposit, spark plug carbon deposit, intake carbon deposit and so on. These positions are closely related to the power output of the engine. When there is too much carbon in the engine, the ignition energy of the automobile decreases and the intake efficiency decreases, which eventually leads to the decrease of engine power, weak acceleration and stuffy sound. 2. Fuel system: Adding inappropriate fuel labels will lead to the decrease of vehicle output power and power. Or because the vent hole of the fuel tank cover blocks the switch of the fuel tank, the fuel filter and the fuel pipe between the fuel tank and carburetor can't meet the required oil supply, resulting in too thin mixture and weak engine acceleration. 3. Air intake: If the air filter is not cleaned in time after long-term use, insufficient air volume will lead to too rich combustible mixture and reduce engine power. If it is a vehicle with a turbocharger, once the turbocharger fails, the engine will be slow, and even if the throttle is given, it will not explode. 4. Engine overheating: Engine overheating will cause poor lubrication effect, increase mechanical wear, reduce engine power, and lead to engine acceleration weakness.