It is never pleasing to notice a sound you don’t know about, and which will arrive from your car. Thus, what if you detect an exhaust noise that is persistant on your Mercedes Benz CLA Class? It is highly probable that this is a small problem, however, before being sure, it is better to carry out some checks. Our team has created this to help you fix it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Mercedes Benz CLA Class and second, if you have a metallic rattling noise on your Mercedes Benz CLA Class.
Muffled exhaust noise Mercedes Benz CLA Class
Exhaust pipe with holes Mercedes Benz CLA Class
Having a muffled sound from its exhaust is not insignificant and can lead to over-consumption, or a malfunction of the engine, which could finally become dirty, for example. If you have an exhaust noise on your Mercedes Benz CLA Class, it is possible that it is due to a crack in the exhaust pipe, this is the most classic cause. In order to validate this, situate someone under the running motor vehicle and accelerate to help them identify the source of the hole. Once located, if it is not too large you can cold seal it with specific metallic mastic type legs. Otherwise, the section will have to be swapped.
Element dislocated exhaust pipe Mercedes Benz CLA Class
The other possibility of being subjected to a muffled exhaust noise on Mercedes Benz CLA Class is to have a part of the exhaust system that has dislocated caused by vibrations for example. In fact some junctions of the different parts of the pot can loosen after a while and cause an exhaust gas leak in places not intended for this goal. These fumes will then produce a loud noise. Same technique as above, we go under the Mercedes Benz CLA Class to define the problem location, and tighten or swap the bolts. If you hear a muffled sound but after checking it doesn’t seem to come from the pot itself, think about looking at this article which gives solutions gives solutions about rear end noises on Mercedes Benz CLA Class.
Metal rattling exhaust sound Mercedes Benz CLA Class
Damaged exhaust muffler noise Mercedes Benz CLA Class
If, on the other hand, you are subject to an exhaust sound that is more of a metallic sort of, it is possible that one or more parts of your exhaust may be broken. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the induce of this noise. To be sure, go under your Mercedes Benz CLA Class, cold, and tap each of the previously stated parts with a hammer to define the origin 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 Benz CLA Class, you will either have to find a resale one and do it yourself, or go to your auto technician.
Metal rattling exhaust noise Mercedes Benz CLA Class : Silentblock, loose pot
Finally, a metallic exhaust noise on your Mercedes Benz CLA Class may be related to a poor attachment of your exhaust to your vehicle. In fact, over time, vibrations, the pot fasteners on the vehicle chassis can come off. In this case, you need to check, 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, the more fixed it should be. Visually check 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 swapped.
