It is never pleasant to perceive a sound you don’t know about, and which will arrive from your car. Thus, what if you find an exhaust noise that is persistant on your Mercedes Classe Cls? It is highly probable that this is a minimal problem, however, before being sure, it is better to execute some investigations. Our team has produced this to help you resolve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Mercedes Classe Cls and second, if you have a metallic rattling noise on your Mercedes Classe Cls.
Muffled exhaust noise Mercedes Classe Cls
Exhaust pipe with holes Mercedes Classe Cls
Having a muffled sound from its exhaust is not insignificant and can lead to over-consumption, or a malfunction of the engine unit, which could in time become dirty, for example. If you have an exhaust noise on your Mercedes Classe Cls, it is possible that it is due to a crack in the exhaust pipe, this is the most common explanation. To be able to verify this, locate someone under the running motor car and accelerate to help them find the source of the hole. Once identified, if it is not too large you can cold seal it with specific metallic mastic type legs. Otherwise, the section will have to be changed.
Element dislocated exhaust pipe Mercedes Classe Cls
The other possibility of being confronted with a muffled exhaust noise on Mercedes Classe Cls is to have a part of the exhaust system that has dislocated resulting from vibrations for example. Indeed some junctions of the different parts of the pot can loosen over time and induce an exhaust gas leak in places not intended for this goal. These fumes will then make a loud noise. Same technique as above, we go under the Mercedes Classe Cls to discover the problem place, and tighten or change the bolts. If you hear a muffled sound but after verifying it doesn’t seem to come from the pot itself, think about having a look at this article which gives solutions gives solutions about rear end noises on Mercedes Classe Cls.
Metal rattling exhaust sound Mercedes Classe Cls
Damaged exhaust muffler noise Mercedes Classe Cls
If, on the other hand, you are subject to an exhaust sound that is more of a metallic type of, it is possible that one or more parts of your exhaust may be damaged. Indeed, it is possible that either your baffles, the catalyst or the silencer are the cause of this noise. To be sure, go under your Mercedes Classe Cls, cold, and tap each of the previously stated parts with a hammer to discover the source of the noise. You should move things between things in the problematic part, if they are baffles, you can try to push the section a little bit to try to block them and thus limit their movements. If it is a dead catalyst, it will be necessary to consider swapping it, as well as the silencer. In this case, to stop the exhaust noise on your Mercedes Classe Cls, you will either have to find a used one and do it yourself, or go to your technician.
Metal rattling exhaust noise Mercedes Classe Cls : Silentblock, loose pot
Finally, a metallic exhaust noise on your Mercedes Classe Cls may be linked to a poor attachment of your exhaust to your car. Indeed, over the years, vibrations, the pot fasteners on the car chassis can come off. In this case, you need to verify, when cold, that the pot holds well, to try to get it to move in different directions and watch how it reacts. Backwards there should be some play and be able to move but not too much. The closer you get to the engine unit, the more fixed it should be. Visually verify the fasteners for which you have doubts. Finally, it is possible that a silentbloc may have died . In this case it will have to be changed.
