What Causes the Jetta to Shake When Starting?

[Robinson]

Jetta shakes when starting due to the following reasons: Clutch Shaking: Let the engine idle, engage a low gear, slowly release the clutch pedal and increase throttle to start. If the car body shakes noticeably, it indicates clutch shaking. Uneven Pressure Distribution Between the Driving and Driven Discs: Uneven spring tension in the frequently engaged clutch, inconsistent adjustment of the release levers, or uneven separation finger ends of the diaphragm spring can cause uneven pressure application, leading to uneven force on the pressure plate or even tilting. This results in poor contact between the driving and driven discs, causing clutch shaking. In this case, replace the clutch pressure springs and level the release levers. Weakened Clutch Torsional Damping Springs: Weakened clutch pressure springs or cracks in the diaphragm spring can cause shaking when the clutch engages. Replace the springs in this situation. Poor Contact of the Clutch Lining: Surface hardening or adhesion of sticky substances can easily cause clutch shaking. Re-bond the clutch lining in this case.