What causes the engine to make a muffled sound above 2000 RPM?
1 Answers
Here are the reasons why a car engine makes a muffled sound above 2000 RPM: Normal phenomenon: It is normal for the engine sound to be slightly louder than when the car was brand new. Replacing the new car's oil with fresh oil requires the engine to go through a break-in period. The engine noise may be louder due to our driving habits, such as frequently driving at low RPMs in high gears, which can lead to incomplete combustion, carbon buildup, and increased engine noise. Incorrect driving habits: Correct your driving habits. Frequent low-speed driving and prolonged stop-and-go traffic in urban areas prevent the engine from fully releasing, which can also lead to carbon buildup and increased noise. Therefore, if you often drive in the city, take time to go out and drive more on highways.