What are the reasons for severe engine shaking when cold?

1 Answers
DelCody
07/29/25 11:33pm
Engine severe shaking when cold is caused by: 1. Improper air-fuel mixture ratio in the engine compartment; 2. Spark plugs used for too long, aging ignition coils, aging high-voltage wires of spark plugs, and leakage problems; 3. Carbon deposits on the valves and intake ports inside the engine; 4. Malfunction of the water temperature sensor. The engine is the device that provides power for the car, determining the car's power, economy, stability, and environmental friendliness. It is divided into diesel engines, gasoline engines, electric vehicle motors, and hybrid motors. Methods for engine maintenance include: 1. Regularly changing the engine oil and oil filter; 2. Regularly cleaning the fuel system, car radiator, and crankcase.
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