What Causes Idle Shaking?

[DeKira]

The causes of idle shaking are: 1. Throttle blockage, carbon buildup, or abnormal opening; 2. Carbon buildup or blockage in the fuel injector; 3. Spark plug burning or damage; 4. Use of low-quality gasoline leading to fuel pump blockage; 5. Incomplete combustion of the air-fuel mixture in the cylinder. Idle is an operating condition of a car, referring to the engine running in neutral gear. The solutions for idle shaking are: 1. Check fuel pressure and replace components if necessary; 2. Replace engine mounts or other aging parts; 3. Clean the fuel system and check if the idle control valve needs carbon cleaning; 4. Check if the spark plugs have excessive carbon buildup and replace them if needed.