What Causes Engine Shaking During Cold Start That Subsides After a While?

1 Answers
EllianaRose
07/25/25 2:49am
Engine shaking during cold start that subsides after a while is caused by: 1. Low temperature: It is necessary to check the spark plugs for carbon buildup and clean them, ensure the electrode gap meets specifications, and replace the spark plugs if needed; 2. Excessively lean or rich air-fuel mixture: The oxygen sensor should be inspected for damage; 3. Carbon deposits in the intake system or fuel system: Clean areas prone to carbon buildup; 4. Faulty coolant temperature sensor: Inspect the coolant temperature sensor by immersing it in warm water and measuring the change in resistance. If there is no change, it indicates the sensor is damaged and should be replaced.
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