What Causes Car Shaking When Starting in First Gear?

[OHazel]

The reasons for car shaking when starting in first gear are: 1. Insufficient engine power, causing the engine to struggle and the car to shake during start; 2. Loose connection between the transmission and chassis; 3. Uneven engagement between the clutch pressure plate and clutch friction disc. The working principle of the clutch is: 1. When the inner race is fixed, the outer race can rotate freely clockwise as the wedges do not lock; 2. When the outer race rotates counterclockwise, the wedges lock and the outer race cannot rotate. The functions of the clutch are: 1. Gradually increasing the driving force to ensure smooth starting; 2. Temporarily separating the engine and transmission for gear shifting; 3. Preventing overload of the transmission system; 4. Reducing torsional vibration impact from the engine and extending the service life of transmission gears.