It is never pleasing to perceive a sound you don’t know about, and which originates from your car. So, what if you find an exhaust noise that is persistant on your Audi A8? It is highly probable that this is a small trouble, however, before being sure, it is better to conduct some checks. Our team has written this to support you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your Audi A8 and second, if you have a metallic rattling noise on your Audi A8.
Muffled exhaust noise Audi A8
Exhaust pipe with holes Audi A8
Having a muffled sound from its exhaust is not insignificant and can end up in over-consumption, or a malfunction of the engine unit, which could finally become dirty, for example. If you have an exhaust noise on your Audi A8, it is possible that it is due to a hole in the exhaust pipe, this is the most typical cause. In order to verify this, position someone under the running motor car and accelerate to help them recognize the origin of the hole. Once determined, if it is not too large you can cold seal it with specific metallic mastic type legs. Otherwise, the section will have to be replaced.
Element dislocated exhaust pipe Audi A8
The other possibility of being confronted with a muffled exhaust noise on Audi A8 is to have a part of the exhaust device that has dislocated as a consequence of vibrations for example. In fact 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 generate a loud noise. Same technique as above, we go under the Audi A8 to discern the trouble place, 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 taking a look at this content page which gives answers gives solutions about rear end noises on Audi A8.
Metal rattling exhaust sound Audi A8
Damaged exhaust muffler noise Audi A8
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 broken. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the induce of this noise. To confirm, go under your Audi A8, cold, and tap each of the previously stated parts with a hammer to discern 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 replacing it, as well as the silencer. In this case, to stop the exhaust noise on your Audi A8, you will either have to find a used one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise Audi A8 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Audi A8 may be in connection with a poor attachment of your exhaust to your car. In fact, as time passes, vibrations, the pot fasteners on the car chassis can come off. In this case, you need to examine, 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 motor, the more fixed it should be. Visually examine 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 replaced.
