What are the reasons for loud engine noise in the Octavia?
2 Answers
Here are the reasons for loud engine noise in the Octavia: 1. Incompatibility with the viscosity of new engine oil. After prolonged use, the engine oil becomes thinner, and carbon deposits accumulate. When new oil is replaced, the engine may not adapt to the oil's viscosity, potentially increasing the RPM and causing loud engine noise. High-quality engine oil should be used. 2. Poor sound insulation. If the sound insulation is ineffective, the car's sealing strips should be inspected. If the sealing strips are found to be aged, they need to be replaced. 3. Insufficient coolant. In low temperatures, insufficient coolant can lead to louder engine noise. The coolant level should be checked promptly and refilled if necessary. 4. Abnormal shock absorbers. Issues with the car's shock absorbers can easily cause louder engine noise. Drivers should regularly check the shock absorbers to avoid malfunctions. Professional maintenance at a repair shop is recommended.
I've repaired many cars recently and frequently encountered issues with loud engine noise. The most common causes are worn-out bearings or bushings inside the engine - it's inevitable that they'll age and start making noise over time. Another frequent issue is insufficient or dirty engine oil; poor lubrication increases engine friction, which naturally leads to louder operation. Sometimes a cracked exhaust pipe or failed gasket can also cause particularly loud noises, an annoying buzzing sound. During inspections, I've also found loose or slipping belts, or deteriorated engine mounts causing vibration amplification - these all need to be checked systematically. Don't ignore loud noises; they can lead to major problems if you keep driving. It's best to promptly visit a proper repair shop for diagnosis with a stethoscope. Regular maintenance with frequent oil changes can prevent many of these issues.
