What are the causes of idling vibration in Qiao Ge?

[VanEmerson]

The causes of idling vibration in Qiao Ge are as follows: Severe engine carbon deposits: Dirty throttle or excessive carbon deposits in the fuel injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an overly lean mixture during cold start, making it difficult to start. In this situation, the engine will only start easily after the carbon deposits have absorbed enough gasoline to reach saturation. After starting, the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the engine's vacuum suction force and burned, making the mixture too rich again. The combustible mixture in the engine alternates between being too lean and too rich, causing idling vibration after a cold start. Ignition system malfunction: Check the working condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or inadequate spark plug firing can also lead to such issues.