What are the causes of severe car body shaking?
2 Answers
Causes of severe car body shaking: 1. Ignition system failure: Poor performance of the ignition system, bad spark plug firing condition; 2. Engine mount aging or loosening: Engine mounts are rubber blocks between the engine and the frame. Once they age or loosen, the car body will shake severely; 3. Carbon deposit issues: Cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits; 4. Poor fuel quality: Damages engine performance and causes car body shaking; 5. Insufficient tire pressure or balance problems; 6. Incomplete clutch separation; 7. Spark plugs burnt, excessive spark plug gap, or loosening.
Severe body shaking is something I've encountered often in my over ten years of driving experience, and it usually relates to tires or rims. Uneven tire wear, lack of wheel balancing, or rim deformation can make the car feel unstable, especially at high speeds. Like that one time I was on a business trip—once I hit 80 km/h, the car started shaking badly, nearly causing an accident. It turned out to be loose tire bolts. I recommend getting a wheel balance check first and verifying tire pressure. Regularly inspecting tire wear is crucial—don’t wait until it becomes a major issue. Safety comes first, and fixing such problems early saves money and hassle.
