How to Soundproof a Noisy Car Engine?
2 Answers
Methods for soundproofing a noisy car engine: You can install soundproofing cotton on the engine hood, which can effectively block some of the noise. Additionally, installing soundproofing cotton inside the car doors can also help reduce noise. There are many factors that contribute to a noisy engine, and some cars come from the factory with engines that are quite loud. Most noisy engines are direct injection engines. Many direct injection engines produce a ticking sound during operation, which is the normal working sound of the high-pressure fuel pump. Direct injection engines must be equipped with a high-pressure fuel pump; otherwise, the injection pressure of the fuel injectors will be insufficient.
As a seasoned driver with over a decade of experience, engine humming noises can be quite a headache. I remember my old car had the same issue—the simplest DIY solution was to buy some engine hood soundproofing foam (available online for just a few dozen yuan), cut it to size with scissors, and stick it under the hood lining. If the noise persists, try adding door seal strips to block some of the sound waves from entering the cabin. The firewall area is trickier, but you can buy professional soundproofing mats and apply them carefully. Don’t overlook routine checks like engine belt tension and oil levels—these common issues can amplify noise. I make it a habit to listen for unusual sounds after parking and address them promptly to avoid noise affecting my driving mood and fuel efficiency. A little DIY effort with minimal cost delivers instant results, making the cabin much quieter. (Word count: 161)
