Why does the engine shake for a while after starting? Is it normal?

[VanAlivia]

The reasons for engine shaking after starting are as follows: 1. Excessive carbon deposits: There is too much carbon buildup inside the engine. 2. Ignition system failure: There is a problem with the vehicle's ignition system. 3. Unstable fuel supply: The engine's fuel supply is unstable. 4. Incorrect gas mixture: The air-fuel mixture ratio in the engine is abnormal. 5. Uneven cylinder operation: Engine shaking caused by uneven operation of the engine cylinders. Below is some relevant information about engines: 1. Number of engine cylinders: Common engines include four-cylinder and six-cylinder configurations. Engine cylinder counts range from three-cylinder, four-cylinder, six-cylinder, eight-cylinder, ten-cylinder, to twelve-cylinder engines. Engines can also be categorized by their arrangement: inline, V-type, W-type, and horizontally opposed engines. 2. Engine principle: An engine is a machine that converts other forms of energy into mechanical energy. Modern engines include internal combustion engines, external combustion engines, jet engines, and electric motors.