What Causes Shaking When Starting a Manual Transmission Car?

2 Answers
MacPhoebe
07/29/25 12:28am
Starting shaking is caused by the wear and slipping of the clutch pressure plate and disc, due to aging or quality issues. Both the pressure plate and disc need to be replaced simultaneously. Below is extended information on starting shaking: 1. When the car shakes during starting, let the engine idle. 2. Engage a low gear, slowly release the clutch pedal and increase the throttle to start. If the body shakes noticeably, it indicates clutch shuddering. 3. Clutch shuddering can also be caused by broken or loose driven plate rivets, fractured driven plate steel sheets, or unbalanced rotating components. 4. Loose engine mounts or misalignment between the transmission's first shaft and the engine crankshaft centerline can also lead to car shaking during starting.
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DeAlivia
08/12/25 4:42am
I've encountered the issue of manual transmission car jerking during startup multiple times. As a driver with over 20 years of manual transmission experience, the main causes are imperfect engagement due to worn clutch plates, or uncoordinated rapid clutch release during operation; excessively low engine idle speed can also affect smooth starting, often caused by aged spark plugs or carbon buildup; fuel system issues like clogged fuel filters may also lead to insufficient power and jerking. Driving habits are crucial – practicing gradual clutch release with gentle throttle application during startup can prevent jerking; regular maintenance such as checking spark plug condition and replacing clutch components can prevent serious failures and save long-term repair costs. I remember one severe jerking incident during a long trip, which turned out to be an idle speed control valve problem – timely repair ensured driving safety.
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