What Causes Engine Ignition Shaking?

1 Answers
AlexandraDella
07/29/25 11:14pm
Engine ignition shaking can be caused by the following reasons: 1. Aging or loosening of engine mounts: Engine mounts are rubber blocks placed between the engine and the vehicle frame. Their function is to reduce vibration and provide cushioning during engine operation, as well as to secure the engine in place. Once these mounts age or become loose, they can cause the engine to shake during ignition. 2. Engine misfire: An engine misfire primarily refers to one or more cylinders not functioning properly. A misfire will cause the exhaust gas flow to have noticeable interruptions, with the exhaust pipe shaking significantly, making the engine shake clearly noticeable. 3. Excessive carbon buildup inside the engine: Carbon deposits include cylinder carbon, throttle carbon, spark plug carbon, and intake carbon. When there is too much carbon buildup inside the engine, the car's ignition energy decreases, and intake efficiency drops, ultimately leading to symptoms like engine shaking and poor acceleration. 4. Intake system malfunction: Air is one of the power sources for the engine. If the air filter is not cleaned in time after long-term use and becomes clogged, insufficient air supply will result in an overly rich combustible mixture, reducing engine power. 5. Poor atomization or partial clogging of the fuel injector: This can degrade the quality of the air-fuel mixture or result in too little fuel injection, leading to an overly lean mixture and causing unstable engine idle or shaking.
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