What is the reason for poor power when driving?

The most common faults of poor acceleration are dirty throttle and missing spark plug. You can check the throttle first. If the throttle is too dirty, it needs to be cleaned. After cleaning the throttle, you need to learn the idle speed again, otherwise the idle speed will be unstable. In addition, check the electrode gap of the spark plug. If the spark plug gap is too large, the ignition amount will be insufficient, which will lead to insufficient combustion of the mixture. So the power of the vehicle is insufficient. You need to replace the spark plug.