How to Eliminate Car Engine Noise?

[McRiley]

Methods to eliminate car engine noise: 1. Install high-grade sound-absorbing foam materials on the engine cover; 2. Use heat-insulating pistons to increase the combustion chamber wall temperature and shorten the ignition delay period; 3. Increase the compression ratio and apply exhaust gas recirculation technology; 4. Use dual-spring fuel injectors to achieve pre-injection. Reasons for car engine noise: 1. The car has been parked for a long time; 2. The engine belt tension is insufficient; 3. The viscosity of the engine oil is too high; 4. Leakage in the intake and exhaust pipes; 5. Use of low-quality fuel; 6. Loose screws on the engine underguard, causing the engine to be unstable; 7. The engine is not fully released, leading to carbon deposits; 8. The throttle valve is dirty.

[LaHaven]

Having driven for many years, I believe the key to reducing engine noise lies in regular inspections and maintenance. If you hear unusual noises, start with the basics: check if the engine belt is loose or worn, as that's often the source of a hissing sound; inspect the bearings and exhaust system for damage, especially since a cracked muffler can be very loud. Routine maintenance is crucial—for example, changing the oil every 5,000 kilometers and opting for high-quality synthetic oil can make the engine run smoother. Additionally, installing soundproofing materials under the hood, such as acoustic foam, can absorb a significant amount of noise. Driving habits also play a big role—avoid slamming the accelerator or maintaining high RPMs for extended periods. If the noise persists, don't hesitate to visit a reputable repair shop for a thorough inspection to rule out internal issues—safety first. These small steps can greatly reduce noise, making your drive more comfortable and quieter.

[AdamRose]

As a DIY-loving car enthusiast, I enjoy tackling noise issues myself. First, noises may come from loose components or poor exhaust flow, so check if bolts are tight and inspect the exhaust pipe for holes. Then, soundproofing modifications are a great solution—applying soundproofing cotton or foam layers in the engine bay can absorb vibrations and noise; adding soundproofing materials to door panels also helps, with noticeable overall noise reduction. I also regularly replace the air filter and spark plugs, as aging parts can increase friction noise. Don’t overlook oil quality—full synthetic oil protects the engine better. Finally, adjust your driving style: smooth starts and avoiding sudden acceleration naturally reduce noise. These DIY projects are cost-effective and practical, adding to the fun of car ownership, but don’t forget regular professional maintenance to prevent deeper issues.

[CamilleRose]

I place great emphasis on car safety and comfort, and reducing engine noise starts with daily habits. If the noise increases, first check the basics: ensure the belt tension is correct and the exhaust system is intact, as these can easily cause squeaks. Adding fresh engine oil lubricates components, reducing friction noise. Placing soundproofing foam under the hood is highly effective—there are specialized products available on the market that are easy to install. Safety is crucial: noise can be a sign of internal issues, such as a failing bearing or an exhaust leak. If detected, stop driving immediately and have a technician inspect the vehicle, as continued driving poses high risks. Preventive measures include servicing the car every six months and replacing the oil filter with a high-quality one. While driving, gently press the accelerator to maintain a steady RPM, which significantly reduces noise. Prioritize safety—don’t just focus on saving money. Ensuring your car’s health is what matters most.