What are the reasons for idle shaking in Changan CS55?
1 Answers
The idle shaking in Changan CS55 can be attributed to the following four reasons: 1. Severe engine carbon deposits causing idle shaking: When there is excessive carbon buildup inside the engine, the gasoline sprayed by the cold start injector is largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making it difficult to start. In this situation, the engine only starts easily once the carbon deposits are saturated with gasoline. After starting, the gasoline adsorbed on the carbon deposits is drawn into the combustion chamber by the engine's vacuum suction, making the air-fuel mixture too rich. The fluctuating air-fuel mixture leads to idle shaking after a cold start. 2. Ignition system issues causing idle shaking: Check the condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or weak spark plug firing can also lead to such symptoms. 3. Unstable fuel pressure causing idle shaking: Abnormal fuel supply pressure or malfunctioning intake pressure sensors can cause vehicle shaking. If the fuel pump's supply pressure is abnormal or the intake pressure sensor provides incorrect readings or malfunctions, it can result in idle shaking. 4. Aging engine components causing idle shaking: Engine mounts act as the engine's shock absorption system, absorbing minor vibrations during operation. If the engine mounts are faulty, these vibrations can transfer to the steering wheel and the cabin, causing shaking during idle.
