What Causes Intermittent Idle Shaking in the Elantra?

[VanAdalynn]

The causes of intermittent idle shaking in the Elantra are as follows: 1. Engine carbon buildup: Most engine carbon buildup is caused by poor driving habits of the owner. 2. Spark plug carbon buildup: The carbon buildup on spark plugs can be particularly severe, requiring the owner to check for carbon deposits on the spark plugs and replace them regularly if excessive buildup is found. 3. Ignition system failure: Components such as ignition coils, spark plugs, and high-voltage wires have a limited lifespan. Any issues with these parts can lead to poor ignition system performance, resulting in idle shaking. Ignition system failures should be addressed promptly, as severe cases may prevent the engine from starting or even cause sudden stalling while driving, leading to unnecessary trouble.