Why Can't I Shift into Second Gear While Other Gears Work Normally?

[LaJeremiah]

Difficulty shifting into second gear is usually caused by deformation of the linkage mechanism, which prevents gear engagement. Precautions for gear shifting include: 1. Avoid coasting in neutral; always engage the parking brake and shift to P before turning off the engine. 2. Control the clutch and throttle properly when starting, and shift gears only after the vehicle speed stabilizes. 3. Engage reverse gear only when the vehicle is completely stopped. 4. Never start the engine by shifting gears while in neutral with the engine off. The gear shifting process involves: 1. Shifting gears according to the vehicle's speed. 2. Depressing the clutch pedal while releasing the throttle pedal. 3. Holding the gear lever and shifting it to the desired gear position. 4. Releasing the hand after completing the shift. Manual transmission vehicles are equipped with a manual gearbox, which operates by switching different gear sets to achieve varying gear ratios. A manual transmission consists of an input shaft, output shaft, and gears. The input shaft connects to the clutch, transmitting power directly from the clutch to the gear sets. Different gear ratios produce distinct power transmission effects. Shifting while driving refers to changing the gear ratio.