Why does a manual transmission car shake when starting?

[OEllie]

Manual transmission cars shaking when starting is caused by insufficient engine power, loose connections between the transmission and chassis, or uneven engagement of the clutch pressure plate and friction disc. If not addressed promptly, it may worsen engine carbon buildup, damage spark plugs, and accelerate engine component aging. Manual transmission gear positions include: 1. R (Reverse gear): Used for reversing; ensure the vehicle is completely stopped before engaging R gear and avoid high engine RPM to prevent transmission damage; 2. N (Neutral gear): Generally used for brief stops; the shift lever can be directly moved from R or D gear to N gear.