It is rarely pleasing to hear a sound you don’t know about, and which comes from your car. So, what if you identify an exhaust noise that persists on your Mercedes Classe A 3? It is highly probable that this is a small problem, however, before being sure, it is better to carry out some inspections. Our team has produced this to help you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your Mercedes Classe A 3 and second, if you have a metallic rattling noise on your Mercedes Classe A 3.
Muffled exhaust noise Mercedes Classe A 3
Exhaust pipe with holes Mercedes Classe A 3
Having a muffled sound from its exhaust is not insignificant and can cause over-consumption, or a malfunction of the engine, which could eventually become dirty, for example. If you have an exhaust noise on your Mercedes Classe A 3, it is possible that it is due to a hole in the exhaust pipe, this is the most classic reason. In order to confirm this, locate somebody under the running motor car and accelerate to help them identify the origin of the hole. Once discovered, 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 Classe A 3
The other possibility of being the subject of a muffled exhaust noise on Mercedes Classe A 3 is to have a part of the exhaust system that has dislocated due to vibrations for example. In fact some junctions of the different parts of the pot can loosen with time and generate 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 Classe A 3 to determine the problem place, and tighten or change the bolts. If you hear a muffled sound but after checking it doesn’t seem to come from the pot itself, think about taking a look at this content page which gives answers gives solutions about rear end noises on Mercedes Classe A 3.
Metal rattling exhaust sound Mercedes Classe A 3
Damaged exhaust muffler noise Mercedes Classe A 3
If, on the other hand, you are subject to an exhaust sound that is more of a metallic type, it is possible that one or more parts of your exhaust may be damaged. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the induce of this noise. To make sure, go under your Mercedes Classe A 3, cold, and tap each of the previously stated parts with a hammer to determine 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 out of date catalyst, it will be necessary to consider replacing it, as well as the silencer. In this case, to stop the exhaust noise on your Mercedes Classe A 3, you will either have to find a second hand one and do it yourself, or go to your auto mechanic.
Metal rattling exhaust noise Mercedes Classe A 3 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Mercedes Classe A 3 may be related to a poor attachment of your exhaust to your car. In fact, after some time, 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 swapped.
