What Causes Engine Noise and Vibration?

[LeJasper]

Reasons for engine noise and vibration: 1. Aging or loosening of engine mounts: Engine mounts are designed to reduce vibration and absorb shocks during engine operation while securing the engine. Once they age or become loose, engine vibration becomes noticeably abnormal. 2. Engine misfire: This refers to one or more cylinders in the engine not functioning properly, characterized by intermittent exhaust gas flow and severe shaking of the exhaust pipe, sometimes accompanied by popping sounds. 3. Carbon buildup in the engine: This includes carbon deposits in the cylinders, throttle body, spark plugs, and intake system. Excessive carbon buildup reduces ignition energy and intake efficiency, leading to symptoms like engine vibration and poor acceleration. 4. Fuel system malfunction: Using incompatible fuel grades can reduce engine power output and performance. Alternatively, clogged fuel tank vent holes, fuel tank switches, fuel filters, or fuel lines between the tank and carburetor can restrict fuel supply, resulting in a lean air-fuel mixture and engine vibration.