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What Causes a Very Loud Engine Noise?

3 Answers
CaydenAnn
08/31/25 8:06am
Engine noise can be caused by the following reasons: 1. Aging parts: The vehicle may have been used for too long, leading to wear and tear of various components. 2. Carbon deposits: There may be carbon buildup inside the engine, which should be cleaned promptly. 3. Poor fuel quality: The fuel used may be substandard. 4. Faulty temperature sensor: The sensor may be malfunctioning. Additional details are as follows: 1. About the engine: An engine is a machine that converts other forms of energy into mechanical energy. It can refer to either the power-generating device or the entire machine, including the power unit. 2. Types of engines: These include internal combustion engines, external combustion engines, jet engines, and electric motors.
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AaliyahLee
09/13/25 4:18am
I've been driving for over a decade myself. Common causes of loud engine noise include insufficient or degraded engine oil. Oil starvation can cause bearing friction noises that sound like knocking. Exhaust system leaks, such as damaged pipes, can also produce loud roaring sounds, especially during acceleration. Loose belts may squeal, and fan issues can also cause abnormal noises. I remember once neglecting an oil check - the noise increased and nearly led to engine failure. A simple inspection could have revealed the oil level and belt condition. Environmental factors like high-temperature driving can exacerbate noise. I recommend regular oil changes and belt inspections - it saves money and ensures safety.
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DiDiana
10/27/25 5:05am
As an ordinary car owner, loud engine noise during daily commutes is often caused by old or misfiring spark plugs, resulting in abnormal sounds due to improper ignition. A dirty air filter clogging the intake can force the engine to work harder to draw in air, creating noise—I once experienced a sudden increase in noise and found it was due to a dust-clogged filter. Blocked exhaust outlets or faulty cooling fans can also amplify the sound, and cleaning or replacing these components can help. If the issue persists, the noise may be related to driving habits, such as sudden acceleration or prolonged idling, which can easily cause abnormal sounds. Regular maintenance of small parts helps prevent potential issues.
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