What Causes Engine Vibration?
2 Answers
Engine vibration can be caused by several factors: 1. Dirty air filter: The air filter is designed to protect the engine and reduce wear, typically requiring replacement every 10,000 kilometers. Delayed replacement can lead to insufficient air intake, causing low idle speed and resulting in engine vibration. 2. Broken high-voltage wire: This refers to a break in the conductor core of the high-voltage wire, which can affect ignition and cause engine vibration. 3. Abnormal water temperature: High water temperature can lead to premature ignition timing, changes in the air-fuel mixture ratio, thinning of engine oil viscosity, and reduced lubrication performance. 5. Clogged fuel injector: Impurities in gasoline can clog the injector nozzles, causing inconsistent fuel injection amounts across injectors. This leads to uneven cylinder operation and engine vibration.
I've driven many cars, and engine shaking is the most annoying issue, especially when waiting at a red light or driving at low speeds—the entire body vibrates. Common causes include problems with the ignition system, such as worn spark plugs or faulty ignition coils, which can lead to misfiring in some cylinders and uneven combustion. The fuel system can also be a troublemaker; unstable fuel pump pressure or clogged fuel injectors disrupt the air-fuel mixture ratio, causing severe vibrations. Worn engine mounts make things worse—when the rubber pads lose their elasticity, they can't absorb engine vibrations anymore. If you're doing it yourself, start by checking the spark plug color; if they're black or have carbon buildup, replace them. Then use an OBD scanner to read trouble codes and identify electronic issues. Regular maintenance is crucial—cleaning the fuel system and replacing the air filter can help prevent such problems. Also, low engine oil levels can cause shaking due to insufficient lubrication, so always check the fluid levels to avoid worsening the issue.
