What is the abnormal noise of refueling when Chang 'an Xiao Ye shifts gears?

The reason for the abnormal sound when shifting a manual transmission car may be that the service life of the manual transmission car is long and the shifting mechanism is loose. Check whether the shift ball head and locking mechanism are loose and abnormal. Sometimes when the weather is cold, the vehicle will make a sharp noise after shifting gears.

When shifting gears, pedal the clutch to the bottom. This is a process in which the engine and transmission gears are completely separated, the gear group is changed through the gear lever, and then re-engaged. Because the gear sets before and after shifting are different, there is a speed difference between the gear sets to be engaged after shifting, which is synchronized by the synchronizer.

If the clutch is disengaged without stepping on the bottom, there will be sliding friction between the engine and the shift gear set, and the abnormal sound you hear is the sound of teeth. If the clutch is stepped too lightly, even the gear set cannot be disengaged, that is, the gear set cannot be disengaged.

When shifting gears, if you don't step on the clutch, the speed difference between the shifting gear set and the transmission gear set will be great, the meshing will not be smooth, and there will be a sound of tooth dropping. If it is light, it will increase the magic. If it is serious, it will knock out the teeth and cause damage to the gearbox.