What Causes the Engine to Make a 'Tututu' Sound?
1 Answers
Here are the reasons for abnormal engine noise: 1. Aging or loosening of engine mounts: Engine mounts are rubber blocks placed between the engine and the frame. They are used to reduce vibrations during engine operation and secure the engine. Once the mounts age or loosen, the engine will shake, causing abnormal noise. 2. Engine misfire noise: An engine misfire mainly refers to one or more cylinders not working properly, typically manifested as intermittent exhaust gas flow, severe shaking of the exhaust pipe, and clearly audible abnormal engine noise. This phenomenon is closely related to ignition coil failure. 3. 'Knocking' noise: Due to poor lubrication conditions, excessive wear of pistons and cylinder walls leads to the clearance between them exceeding normal tolerance. During engine operation, the piston skirt impacts the cylinder wall, producing a clear 'clanging' sound, which is more noticeable at idle or low speeds. 4. Overly rich air-fuel mixture: When the engine's air-fuel mixture is too rich, symptoms include difficulty starting the engine, uneven operation, black smoke from the exhaust pipe, abnormal engine noise, and sometimes backfiring. 5. Carbon deposits and clogged filters: This results in decreased engine power and increased fuel consumption.
