What are the causes of idling vibration in the Magotan?
2 Answers
Magotan idling vibration is caused by: when the engine is running, the engine oil does not keep up in time, resulting in the engine not obtaining optimal mechanical operating conditions, or poor fuel injector atomization, improper idle adjustment, leading to engine vibration. Car idling vibration is a common phenomenon, and slight idling vibration is normal. If noticeable body vibration is observed when starting the vehicle or when the vehicle is stationary with the engine running, it is usually due to severe engine carbon buildup or a dirty throttle. When there is excessive carbon buildup inside the engine, the gasoline sprayed by the cold start injector is largely absorbed by the carbon deposits, causing the cold start mixture to be too lean, making it difficult to start. In this situation, the vehicle will only start easily once the carbon deposits have absorbed enough gasoline to reach saturation. After starting, the gasoline adsorbed on the carbon deposits is then drawn into the combustion chamber by the engine's vacuum suction to burn, which enriches the mixture again. The combustible mixture in the engine alternates between lean and rich, causing idling vibration after a cold start.
I've been driving Volkswagen cars for over a decade, and idle vibration in the Magotan is quite common. It's mostly caused by carbon buildup in the engine clogging the throttle body, leading to poor air intake. If the fuel injectors are dirty, it can also cause unstable fuel supply. Another reason could be aging spark plugs or faulty ignition coils, resulting in a cylinder misfire and severe engine vibration. There's also a small detail - when the engine mounts deteriorate, their damping effect weakens, allowing vibrations to directly transmit into the cabin. I remember one time my car was shaking so badly the steering wheel was wobbling, but replacing the engine mounts immediately made it quiet again. Of course, poor fuel quality or a dirty air filter can also worsen this problem. I recommend checking these components every 20,000 kilometers.
