Why does a manual transmission car shake when starting?
1 Answers
Manual transmission car shaking during startup involves many reasons, which can generally be divided into the following categories: 1. Normal phenomenon. When the clutch is released to the semi-engaged position, the vehicle will experience shaking, which is a normal phenomenon. This phenomenon is called the car's creep phenomenon. Additionally, if starting on a slight slope without giving enough throttle, the shaking will be more noticeable. 2. Driver issue. Problems with the coordination between throttle and clutch, such as insufficient throttle or releasing the clutch too quickly, can also cause shaking during startup. Adding a bit of throttle before fully releasing the clutch can improve the car's power, making starting easier and reducing shaking. 3. Vehicle malfunction. Issues with the intake system, ignition system, or fuel system can cause the car to shake when starting. For example, clogged fuel lines can lead to uneven engine cylinder operation and shaking; a dirty throttle body can cause uneven intake and shaking; damaged high-voltage wires or faulty spark plugs can result in unstable engine operation and shaking.