What are the reasons for car shaking after startup?

1 Answers
VonArabella
07/30/25 8:33am
Car shaking after startup is caused by: 1. Dirty throttle body or excessive carbon buildup in the fuel injectors leading to vibration; 2. Aging engine mounts also causing vibration; 3. Low cylinder compression; 4. Untimely replacement of spark plugs; 5. Engine vibration due to low fuel pressure; 6. Open circuit in high-voltage wires; 7. Dirty air filter, clogged and not replaced in time. The principle of car startup is to transition the engine from a stationary state to an operational state, using external force to rotate the engine's crankshaft, starting the internal combustion engine, igniting the combustible gas in the cylinders, initiating the working cycle, with the crankshaft beginning to rotate under external force until the engine operates.
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