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When the car makes a dreadful noise, it is because of a defect or failure in the flue gas exhaust system. Let’s see how to make your exhaust quieter!
Whether you use your car as a daily driving vehicle or you are a car enthusiast and love performance tweaks, exhaust system noises can be very annoying. A leak in the exhaust system can come from many reasons and can cause variable noises that can be difficult to diagnose.
So, how to make your exhaust quieter? Knowing what to look for and also what to listen to are essential to make the exhaust silent.
We have listed all the potential reasons of exhaust noise and how to fix it below.
Purposes of the Exhaust System
The purpose of your exhaust system is to provide a path for the exhaust gases to leave the engine out from under the vehicle. This path is used to prevent exhaust gases from entering the vehicle.
And most times, the exhaust system will make the expelled gases cleaner to prevent damage to the environment. These components also contribute to keeping the exhaust system quiet. There are several components in the exhaust system that can fail and cause unwanted noises.
– Silencer: The exhaust system silencer is at the rear of the vehicle. The purpose of the muffler is to lower exhaust noise by letting it travel through variable chambers that even out exhaust flow.
Even though the muffler is the key component used to keep the exhaust quiet, it is the principal part that is modified to make the car louder if you want a high performance sounding exhaust system.
The muffler can develop holes over time because of corrosion. It can also have welds or connections to the rest of the exhaust system which can break causing the noise.
– Catalyst: The catalytic converter in the exhaust system helps with emissions. It changes hydrocarbons into a safer gas that does not affect the environment. The converter can make noise if it has cracks in the connector or fails internally.
– Exhaust Pipes: Exhaust pipes connect all exhaust components through connecting flanges or welds. They make most exhaust pipes of steel, which will corrode. This corrosion can cause holes in the drain or cause cracks because of the weakening of components.
– Exhaust Manifolds: it mounts exhaust manifolds to the engine and provides a collection point for exhaust gases to accumulate as they exit the cylinder heads. It connects the manifolds to the exhaust pipes on one side and the engine on the other.
The manifold can have a faulty connection that causes a leak. The gasket that seals it on the engine can fail or the exhaust manifold can break and leak.
How to make the Exhaust System Silent?
Visual signs of exhaust leaks
Look for signs of leaks when inspecting the exhaust system. If there are exhaust leaks from welds or connections, it usually shows up as a black or white streak on exhaust components.
The most common sound coming from an exhaust leak is a hissing noise. It usually looks like a small air leak from a balloon. While the engine is running, you can check all parts and exhaust connections for this noise.
Most times, using a small rubber tube such as a stethoscope helps identify the leak. With one end of the hose to the drain and the other to your ear, you can move the hose around the drain until you find the noise. Most small leaks can be repaired by tightening loose connections or by reheating the hose and broken welds.
Ticking or knocking noises
When a large leak forms in the drain, it typically sounds like a loud knock. Most of the time these occur near the engine or exhaust manifold. Visually check for leaks and cracks and use the rubber hose to locate the leak.
Loud ticking and rattling noises most commonly occur on the exhaust manifold due to a rupture of the manifold or a leak in the manifold gasket.
Final Words – How to Make Your Exhaust Quieter!
Leaks in the exhaust system can cause engine drivability problems. Any exhaust leaks should be resolved as soon as possible. Welding can usually fix small holes and cracks in pipes and connections over the leaking areas.
Cracks or holes in the manifolds, the catalytic converter in the muffler would require replacement of those components. It is important to be vigilant of hot components of the exhaust system during the inspection, as it is easy to burn yourself.
If you do not know how to make your exhaust quieter, get the help of a certified mechanic who can check your exhaust for you.