When the car accelerates, the body shakes. Is the throttle dirty?

First of all, car jitter is divided into starting, idling and high-speed driving. The main reason of auto start jitter is insufficient fuel combustion, which leads to insufficient power of the car. The ignition energy is low, and more oil is needed to meet the power when starting, especially when the temperature of fuel and lubricating oil is low. After a long time, the gap between the two poles of the spark plug gradually becomes larger, which leads to the reduction of ignition energy and poor fuel atomization, resulting in body jitter. In addition, the aging of ignition coil, aging of spark plug high voltage line or leakage will also lead to the decrease of ignition energy. In fact, in today's cars, the dirty throttle is not easy to cause engine idling jitter.