What Causes Slight Engine Idle Vibration?

1 Answers
Peterson
07/25/25 5:06am
The causes of slight engine idle vibration are: 1. Throttle blockage, carbon buildup, or abnormal opening; 2. Carbon buildup or blockage in fuel injectors; 3. Spark plug burning or damage; 4. Use of low-quality gasoline leading to fuel pump blockage; 5. Incomplete combustion of air-fuel mixture in the cylinders. Solutions for engine idle vibration include: 1. Cleaning the fuel system and checking if the idle control valve needs carbon removal; 2. Inspecting spark plugs for excessive carbon buildup and replacing them if necessary; 3. Checking fuel pressure and replacing components when needed; 4. Replacing engine mounts or other aging parts. Engine idle refers to the no-load operation state of the engine, where the clutch is engaged, the transmission is in neutral, and the accelerator pedal is fully released.
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