What Causes Car Shaking During Ignition?

[ElleFitz]

There are several reasons why a car may shake during ignition: 1. Worn or loose engine mounts: Engine mounts are rubber blocks placed between the engine and the car frame. Their purpose is to reduce vibration and absorb shocks from engine operation, while also securing the engine in place. If the mounts become worn or loose, the engine's shaking will be noticeably abnormal. 2. Engine misfire: An engine misfire occurs when one or more cylinders fail to function properly. Common symptoms include intermittent exhaust flow, severe shaking of the exhaust pipe, noticeable engine vibration, and sometimes accompanied by a sputtering sound. This can be caused by issues such as faulty ignition coils. 3. Carbon buildup: Carbon deposits can accumulate in various parts, including the cylinders, throttle body, spark plugs, and intake system, affecting the engine's power output. Excessive carbon buildup reduces ignition energy and decreases intake efficiency, ultimately leading to symptoms like engine shaking and poor acceleration.