What are the reasons for severe engine vibration?
2 Answers
If you can clearly feel severe engine vibration in the car, there may be four reasons. Here are the detailed explanations: 1. Carbon deposit issue: Carbon deposits include cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits, etc. When there is excessive carbon buildup inside the engine, it can affect a series of parameters and even lead to unstable power output, causing vibration during idling and acceleration. 2. Engine mount aging or loosening: Engine mounts are rubber blocks placed between the engine and the frame to reduce vibrations during engine operation and secure the engine. Once these mounts age or become loose, engine vibration will become abnormally severe. 3. Engine misfire: This occurs when some cylinders in the engine are not functioning properly, usually manifested as: intermittent exhaust gas flow from the car, severe shaking of the exhaust pipe, and noticeable vibration of the engine and body. This is mostly caused by faulty ignition coils or spark plugs. 4. Fuel system malfunction: Using an incompatible fuel grade (e.g., using 92 instead of 95) can cause severe engine vibration.
I've found that when my car's engine shakes violently, it's often related to the ignition system: aging spark plugs or faulty ignition coils causing uneven combustion, clogged fuel injectors making some cylinders work abnormally, and a dirty air filter restricting air intake, leading to incomplete combustion. Additionally, loose engine mounts can amplify vibrations, and malfunctioning sensors like the oxygen sensor can cause the computer control to become unbalanced. Ignoring these issues not only increases fuel consumption but may also damage the engine over time, potentially leading to major repairs. Regular maintenance can prevent these problems, such as replacing spark plugs every 20,000 kilometers, cleaning the fuel system, and keeping the intake system unobstructed.
