What Are the Causes of Low Idle Vibration?
1 Answers
Engine low idle vibration can be caused by severe carbon deposits in the engine, issues with the ignition system, unstable oil pressure, etc. Severe engine carbon deposits: When there is excessive carbon buildup inside the engine, the gasoline sprayed by the fuel injector during a cold start will be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making it difficult to start. Only when the carbon deposits become saturated with gasoline will the engine start easily. The lower the temperature, the more fuel is required for a cold start, and the presence of carbon deposits will significantly affect the success of the cold start. Therefore, it is necessary to clean the fuel system. Issues with the ignition system: Check the working condition of the spark plugs, high-voltage wires, and ignition coils, as poor performance of the ignition system or weak sparking from the spark plugs can also cause low idle vibration during engine startup. If any problems are found with the ignition system after inspection, it is necessary to promptly replace components such as spark plugs. Unstable oil pressure: If the fuel pump's supply pressure is abnormal or the intake pressure sensor's readings are incorrect or malfunctioning, it can also cause vehicle vibration. In this case, it is necessary to check the oil pressure and replace components if needed.
