What are the causes of engine shaking during cold starts?

1 Answers
DelLane
07/29/25 11:29pm
The causes of engine shaking during cold starts are: 1. Insufficient engine temperature; 2. Incorrect air-fuel mixture ratio; 3. Severe carbon buildup in the vehicle; 4. Poor ignition system performance, with suboptimal spark plug firing; 5. Abnormal fuel pump pressure; 6. Faulty or incorrect readings from the intake pressure sensor; 7. Dirty throttle body. The solutions for engine shaking during cold starts include: 1. Cleaning carbon deposits from the vehicle; 2. Parking the car in a garage; 3. Cleaning or replacing the air filter; 4. Using a multimeter to measure resistance and replacing wires with high resistance; 5. Replacing spark plugs; 6. Cleaning the fuel system and idle control valve; 7. Cleaning or replacing the throttle body.
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