"Diagnosing" strange sounds from car exhaust pipes

Exhaust sounds come from many different causes, and each different sound requires a specific way of checking and fixing... Below are common symptoms and causes from the car's exhaust system.

1. Exhaust system sound coming from the engine area

If you hear the exhaust system sound coming from the engine area. This case is simple, either the gasket between the exhaust system and the engine is leaking, or the exhaust bolts are loose. In addition, it can also be more serious cases such as a cracked exhaust tip and you should also check more carefully.

2. Sound from the central part of the exhaust system right under the car

If you find the sound coming from the central part of the exhaust system right under the car. It may be just a hole in the exhaust system, you can weld or replace a section of the exhaust. It may also be the connection between the exhaust pipes and the catalytic converter, you need to check and tighten.

The most worrying thing is that the exhaust system's catalytic converter is damaged (broken) and makes an unpleasant noise when driving. At this time, it is necessary to replace the new catalytic converter at a quite high cost.

3. Sound coming from behind the exhaust system

If you notice an unpleasant sound coming from the rear of your exhaust system, you should immediately check the muffler of your exhaust system for leaks. It is possible that the muffler has a hole, or the connection between the muffler and the exhaust is loose; you may even need to replace the muffler if the existing one is damaged.

4. Sound from the exhaust pipe

If your car is making a loud banging noise at the rear, the problem is not with the exhaust system, but with the engine. A sputtering noise is usually a sign that something needs to be adjusted or repaired under the hood (like a rich engine), not in the exhaust or muffler.

5. The exhaust pipe makes a hissing sound

The condition of the exhaust pipe making a hissing sound is caused by the incomplete combustion process. The cause is due to ignition balance problems including: high voltage coil (coil), distributor, rotor, spark plug (electric candle) and spark plug wire... This condition causes the computer on the dashboard to display an OBD-II error code. At this time, it is necessary to have a car maintenance technician use a digital error scanner.

In addition, the hissing sound can also be caused by a reduction in fuel supply to the engine; a clogged fuel system, or impurities in the fuel tank.