It is never pleasant to listen to a sound you don’t know about, and which originates from your car. Thus, what if you spot an exhaust noise that remains on your Audi A3? It is highly probable that this is a minimal trouble, however, before being sure, it is better to operate some verifications. Our team has written this to help you resolve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Audi A3 and second, if you have a metallic rattling noise on your Audi A3.
Muffled exhaust noise Audi A3
Exhaust pipe with holes Audi A3
Having a muffled sound from its exhaust is not insignificant and can lead to over-consumption, or a malfunction of the car engine, which could finally become dirty, for example. If you have an exhaust noise on your Audi A3, it is plausible that it is due to a crack in the exhaust pipe, this is the most classic cause. In order to verify this, situate a friend or relative under the running motor car and accelerate to help them find 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 A3
The other possibility of being the subject of a muffled exhaust noise on Audi A3 is to have a part of the exhaust device that has dislocated because of 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 produce a loud noise. Same technique as above, we go under the Audi A3 to discern the trouble location, and tighten or replace the bolts. If you hear a muffled sound but after verifying it doesn’t seem to come from the pot itself, consider having a look at this content which gives solutions gives solutions about rear end noises on Audi A3.
Metal rattling exhaust sound Audi A3
Damaged exhaust muffler noise Audi A3
If, alternatively, 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 conceivable that either your baffles, the catalyst or the silencer are the reason of this noise. To be certain, go under your Audi A3, cold, and tap each of the previously stated parts with a hammer to discern 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 changing it, as well as the silencer. In this case, to stop the exhaust noise on your Audi A3, you will either have to find a resale one and do it yourself, or go to your technician.
Metal rattling exhaust noise Audi A3 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Audi A3 may be linked to a poor attachment of your exhaust to your car. Indeed, over time, vibrations, the pot fasteners on the car 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 motor, 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 replaced.
