It is never pleasing to listen to a sound you don’t know about, and which comes from your car. Thus, what if you discover an exhaust noise that is persistant on your Audi S3? It is highly probable that this is a small trouble, however, before being sure, it is better to execute some checks. Our team has created this to help you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your Audi S3 and second, if you have a metallic rattling noise on your Audi S3.
Muffled exhaust noise Audi S3
Exhaust pipe with holes Audi S3
Having a muffled sound from its exhaust is not insignificant and can cause over-consumption, or a malfunction of the engine, which could after a while become dirty, for example. If you have an exhaust noise on your Audi S3, it is plausible that it is due to a hole in the exhaust pipe, this is the most common reason. To be able to verify this, locate a friend or relative under the running motor vehicle and accelerate to help them locate the starting point 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 changed.
Element dislocated exhaust pipe Audi S3
The other possibility of being the subject of a muffled exhaust noise on Audi S3 is to have a part of the exhaust unit 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 create a loud noise. Same technique as above, we go under the Audi S3 to determine the trouble area, 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, consider having a look at this content page which gives answers gives solutions about rear end noises on Audi S3.
Metal rattling exhaust sound Audi S3
Damaged exhaust muffler noise Audi S3
If, on the other hand, you are subject to an exhaust sound that is more of a metallic type of, it is plausible 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 be sure, go under your Audi S3, 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 swapping it, as well as the silencer. In this case, to stop the exhaust noise on your Audi S3, you will either have to find a resale one and do it yourself, or go to your technician.
Metal rattling exhaust noise Audi S3 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Audi S3 may be related to a poor attachment of your exhaust to your vehicle. Indeed, as time passes, vibrations, the pot fasteners on the vehicle 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 responds. 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.
