Is Manual Transmission Jerking Related to Transmission Fluid?
2 Answers
Manual transmission jerking is related to transmission fluid. Not changing the transmission fluid for a long time can affect the car's performance. During use, friction between metal components can generate debris and impurities. Over time, the transmission fluid will become dirty, which can affect gear shifting and block the oil passages. The functions of the transmission are: 1. To change the transmission ratio, meeting the traction needs under different driving conditions and allowing the engine to operate under favorable conditions; 2. To enable the car to reverse; 3. To interrupt power transmission, allowing the engine to start and idle, the car to shift gears or park, and cutting off power to the drive wheels; 4. To achieve neutral gear, stopping power output when the clutch is engaged.
I've been driving manual transmission for ten years, and the jerkiness is indeed related to the gearbox oil. When the lubrication performance of old oil deteriorates, gear engagement becomes rough, especially in low winter temperatures—it feels like stirring maltose. However, simply changing the oil may not completely solve the problem, as clutch disc wear is often the main culprit. Last week, while helping my cousin repair his creaky old Jetta, we found the release bearing had worn grooves. After replacing the clutch kit, it became as smooth as a newly bought Dove chocolate. I recommend checking the clutch travel first—if the pedal can still move forward two finger-widths when fully depressed, the pressure plate is likely worn out.
