What is the fault when the engine exhaust sound becomes louder?
3 Answers
The reason for the increase in engine exhaust sound is: damage to the exhaust pipe muffler. Engine Introduction: An engine is a machine capable of converting various forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. Engine Working Principle: The working principles of two-stroke engines and four-stroke engines differ, with the majority of automobile engines being four-stroke. The working cycle of a four-stroke gasoline engine consists of four piston strokes: intake stroke, compression stroke, power stroke, and exhaust stroke.
I've encountered the issue of increased exhaust noise several times, and it's really frustrating. The most common cause is leaks in the exhaust pipe or muffler, such as rust perforations or aging/sealing ring fractures, which allow exhaust gases to escape directly, creating a whistling sound. Additionally, the engine itself might have problems, like poor cylinder sealing or disrupted ignition sequence, leading to turbulent airflow. I recommend first checking under the car for obvious holes in the exhaust pipe and identifying the source of the noise. Ignoring it could lead to increased fuel consumption or even fines for exceeding emission standards. Quickly take it to a reliable repair shop for diagnostic tests with proper equipment—don't wait until more components are damaged. Safety first. Regular maintenance checks on the exhaust system can prevent such failures.
Recently, my car's exhaust has been unusually loud, making me hesitant to roll down the windows while driving. After consulting some car-savvy friends, they suggested it could be due to a damaged internal muffler, a leaking gasket at the exhaust pipe connection, or even improper engine tuning with worn-out spark plugs causing uneven ignition. Upon noticing this issue, I recorded the sound with my phone and showed it to a mechanic, who recommended first checking the tailpipe for rust. They warned that neglecting minor issues could not only make the noise worse but also reduce engine efficiency and increase fuel consumption. I plan to get a full inspection at the shop this weekend to avoid unexpected breakdowns. Regularly cleaning the undercarriage during car washes can also help prevent rust.
