Great wall haval h62.4 hand-in-hand body jitter

Hello, please describe the jitter, which is mainly caused by the combustion system. The carbon deposit formed by abnormal engine working conditions will affect the nozzle work, including poor atomization and deviation of injection angle, resulting in poor combustion effect of mixed gas and unstable idle speed. The slow throttle response is caused by poor intake and exhaust or carbon deposition in the throttle. There are two reasons for poor air intake and exhaust. One is that there are carbon deposits in the intake and exhaust ports and the combustion chamber, and the uneven surface of carbon deposits in the intake port forms eddy currents, which reduces the combustion space of mixed gas and affects the output power of the engine; Second, the three-way catalyst is blocked. It is suggested that you go to the maintenance station to clean the combustion system, which will cost little, reduce fuel consumption after washing, have a sensitive throttle response, reduce exhaust emissions and make the idle speed more stable.