What Causes Engine Idle Shaking When Cold?

[Travis]

The causes of engine idle shaking when cold include: 1. Engine mechanical faults, such as uneven cylinder pressure among cylinders; 2. Intake system faults, such as intake pipe leaks; 3. Engine management system faults, such as incorrect coolant temperature or intake air temperature signals; 4. Ignition system faults, such as excessive spark plug carbon buildup or damaged ignition coils; 5. Fuel supply system faults, such as excessive internal carbon deposits in fuel injectors causing poor sealing or clogging. In daily life, if you encounter cold engine idle shaking, it is recommended to visit a 4S shop as soon as possible for inspection and problem resolution.