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What Causes Frequent Shaking When Starting a Manual Transmission Car?

1 Answers

Isabel

07/28/25 3:42pm

Frequent shaking when starting a manual transmission car may be caused by insufficient engine power, loose connections between the transmission and chassis, or uneven engagement between the clutch pressure plate and clutch friction disc. The manual transmission primarily transfers power through the clutch, with the clutch pressure plate being responsible for kinetic energy transmission. The clutch pressure plate has a limited lifespan, and prolonged semi-engagement or excessive engine load can accelerate its wear. When the pressure plate wears to a certain extent, power engagement becomes less smooth, resulting in vehicle shaking and unstable engine RPM. Method for smooth manual transmission start on flat roads: When releasing the clutch to the semi-engagement point and the car begins to shake, release the handbrake first and then fully release the clutch to achieve a smooth start.

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