What Causes Severe Shaking When Starting a Car?
2 Answers
The reason for severe shaking when starting a car is the wear and slippage of the clutch pressure plate and disc, which can be caused by aging or quality issues. Both the pressure plate and disc need to be replaced simultaneously. Here are some related explanations for starting shake: 1. When the car shakes during startup, 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 shudder. 3. Clutch shudder can also be caused by broken or loose rivets on the driven plate, fractures in the driven plate steel sheet, 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 startup.
I've experienced this situation before, it feels like the car is trembling. The most common cause is clutch issues, especially in manual transmission vehicles, where uneven wear on the clutch disc leads to jerky engagement when starting. Last time my car shook badly during acceleration, and after inspection, it turned out to be worn pressure plate springs, along with an uneven flywheel surface. Faulty spark plug ignition can also cause this - if one of the four cylinders isn't performing properly, it's like walking with a limp. Engine mount deterioration is another culprit, where engine vibrations are directly transmitted to the cabin, making even your phone vibrate inside the car. Don't overlook tire problems either; improper wheel balancing or deformed rims can cause shaking during acceleration due to uneven force distribution. I recommend getting it checked as soon as possible, don't wait until the car completely breaks down before taking action.
