What Causes Engine Shaking When Cold?

[LeDante]

The reasons for engine shaking when cold are: 1. Low ignition energy at low temperatures; 2. Incorrect air-fuel mixture ratio; 3. Carbon buildup on engine valves and intake ports; 4. Uneven cylinder performance; 5. Faulty coolant temperature sensor; 6. Dirty throttle body or mass air flow sensor. An engine is a machine that converts other forms of energy into mechanical energy, including internal combustion engines, reciprocating piston engines, external combustion engines, Stirling engines, steam engines, jet engines, electric motors, etc. The automobile engine is the power source of a vehicle, serving as its heart and determining its power, fuel efficiency, stability, and environmental performance. Depending on the power source, automobile engines can be classified into diesel engines, gasoline engines, electric vehicle motors, and hybrid powertrains.