What is the reason for the start jitter of automobile manual gear 1?

The reasons for the automobile manual gear 1 starting jitter are: 1, insufficient engine power; 2. Loose connection between transmission and chassis; 3. The combination of clutch pressure plate and clutch friction plate is uneven; 4. The throttle valve is dirty; 5. The oil circuit is unstable; 6. The high-voltage line is burnt out or the spark plug fails. The influence of automatic start jitter of manual gear is: 1, which aggravates the carbon deposition phenomenon of automobile engine; 2, damage the spark plug of the car; 3. Accelerate the aging of engine parts; 4, aggravate the wear and tear of the clutch plate. The automatic starting method of manual gear shifting is: 1, insert the key to turn on the ignition switch and start the engine; 2. Step on the clutch pedal and put the shift lever into 1 gear; 3. Release the handbrake, lift the clutch pedal and fill the gas door.