How to Soundproof a Noisy Car Engine?
2 Answers
Methods to soundproof a noisy car engine include: 1. Installing soundproofing cotton in areas such as the engine hood and firewall to absorb noise energy and convert it into heat dissipated into the atmosphere; 2. Adding soundproofing cotton inside the doors to block out some of the noise. The car engine is the device that provides power to the vehicle, acting as the heart of the car and determining its power, fuel efficiency, stability, and environmental friendliness. Depending on the power source, car engines can be categorized into diesel engines, gasoline engines, electric vehicle motors, and hybrid engines.
The engine noise of my car has been getting louder, making it sound like a construction site when driving. I managed to improve the noise issue myself. First, check if the engine is running properly. If there are no faults, install an engine hood soundproofing pad, which is easy to buy online—materials like foam or felt, and make sure the size fits the inner side of the hood. Clean the surface thoroughly before applying it, then secure it with the included adhesive tape, but avoid blocking the cooling vents to prevent affecting heat dissipation efficiency. The effect is decent, reducing the noise by at least 30-40%. You can also check if the intake pipe is leaking or if the spark plugs need replacement. Regular maintenance is crucial too, such as changing the engine oil every three months to keep the engine running smoothly, which helps reduce vibration noise. For a more thorough solution, firewall soundproofing is more effective, but it’s a bit complex for DIY. Beginners are advised to start with simpler methods.
