Why can't the 3rd gear of the Baojun 560 manual transmission suddenly engage?

[KyleRose]

Manual transmission can't engage gears for the following reasons: Incorrect gear position: When starting an automatic transmission car, the gear must be placed in P or N position. If placed in R or D position, the car will not start. Some manual transmission cars will also not start if the clutch is not depressed. No antifreeze added: Some car owners add water or inferior antifreeze to their cars, resulting in the entire water circuit freezing in extremely cold winter conditions, causing the engine to crack, the car water pump to fail to operate, the car not to start, and damage to other engine components. Gear lever assembly failure: The internal gears of the gear lever are worn, causing the gear lever to get stuck, making it very difficult to pull back and forth, resulting in the inability to shift gears and difficulty in shifting.