What is the reason for engine shaking when cold but running smoothly when warm?

1 Answers
JudahFitz
07/30/25 2:38am
The reasons for engine shaking when cold but running smoothly when warm are: 1. Frozen exhaust pipe; 2. Restricted oil flow; 3. Severe carbon buildup in the electronic throttle; 4. Severe carbon buildup in spark plugs; 5. Aging engine components. The solutions for engine shaking when cold but running smoothly when warm are: 1. Park the car in a warm environment; 2. Use engine oil suitable for the temperature conditions; 3. Increase vehicle usage frequency to use strong exhaust force to promptly remove accumulated water in the exhaust pipe; 4. Add antifreeze; 5. Regularly clean carbon buildup in the electronic throttle; 6. Clean carbon buildup in spark plugs; 7. Replace engine components; 8. Clean the fuel system.
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