What Causes Severe Engine Vibration in Cars?

[MirandaAnn]

Severe engine vibration in cars can be caused by: 1. Engine misfire: One or more cylinders not functioning properly, resulting in intermittent exhaust flow with noticeable tailpipe shaking, sometimes accompanied by abnormal noises; 2. Deteriorated or loose engine mounts: These components are designed to reduce vibration and absorb shocks during engine operation while securing the engine; 3. Carbon buildup issues: Including cylinder carbon deposits, throttle valve carbon, spark plug fouling, and intake system carbon accumulation. Excessive carbon deposits affect ignition energy, air intake efficiency, and air-fuel mixture ratio, leading to unstable power output; 4. Fuel system malfunction: Using incompatible fuel grades that reduce engine power output.