"Diagnosing" strange sounds from car exhaust pipes
(Baonghean.vn) - When you discover that your car is making strange sounds from the exhaust system, you should not ignore it. Because it is very possible that the exhaust system is leaking, and dangerous exhaust gases are entering your car.
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 of car exhaust systems.
1. Exhaust system sound coming from the engine area
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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 is also possible that the exhaust tip is cracked and you should also check more carefully.
2. Sound from the center of the exhaust system right under the car
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If you hear a noise coming from the center of the exhaust system right under the car, it may be a hole in the exhaust system, which you can weld or replace a section of the exhaust. It may also be a connection between the exhaust pipes and the catalytic converter, which 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 catalytic converter with a new one at a fairly high cost.
3. Sound coming from behind the exhaust system
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If you notice an unpleasant sound coming from the rear of your exhaust system, you should immediately check the muffler for leaks. There may be a hole in the muffler, or a loose connection between the muffler and the exhaust; 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 in 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 (such as a fuel-guzzling engine), not in the exhaust or muffler.
5. The exhaust pipe makes a hissing sound.
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The condition of the exhaust pipe making a hissing sound originates from the imperfect 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 fault scanner.
In addition, the hissing sound can also be caused by a reduction in the amount of fuel supplied to the engine; a clogged fuel system, or impurities in the fuel tank.
