What to Do About Exhaust Pipe Leakage?
2 Answers
First, try replacing the gasket, as the leakage may be caused by aging gaskets. If replacing several doesn't help, then a thorough inspection is necessary. If the exhaust pipe is leaking, it's highly likely due to long-term use and rust caused by rainwater. In such cases, the only solution is to replace the exhaust pipe with a new one. Methods such as using copper wire to connect with the gasket, wrapping cotton thread or adhesive tape around the joint, etc., can significantly improve the sealing performance of the joint.
Having run this auto repair shop for so many years, I've seen plenty of exhaust pipe leaks. Usually, it's rust or collision damage that creates holes allowing exhaust gases to escape, resulting in loud popping noises and incomplete exhaust expulsion. Quickly identify the leak location - you can run the engine and feel for airflow with your hand, but beware of burns. For small holes, temporarily sealing with high-temperature tape might buy some time, but it's just a band-aid solution. Exhaust leaks affect engine performance due to insufficient backpressure, potentially increasing fuel consumption and reducing acceleration. More critically, leaking exhaust gases and high temperatures pose safety hazards, with risks of oil leaks or fires. Don't attempt welding unless you're a professional. I always recommend taking it to a repair shop for a full system inspection - it might just be loose pipe connections or require replacing a pipe section. Regular maintenance matters: washing the undercarriage to remove rust during car washes can prevent leaks and extend lifespan.
