It is never pleasing to notice a sound you don’t know about, and which will arrive from your car. Thus, what if you find an exhaust noise that remains on your Audi A7? It is highly probable that this is a minor trouble, however, before being sure, it is better to operate some investigations. Our team has written this to support you solve it. First, we will look at the possible causes if you have a muffled exhaust sound on your Audi A7 and second, if you have a metallic rattling noise on your Audi A7.
Muffled exhaust noise Audi A7
Exhaust pipe with holes Audi A7
Having a muffled sound from its exhaust is not insignificant and can end up in over-consumption, or a malfunction of the car engine, which could in the end become dirty, for example. If you have an exhaust noise on your Audi A7, it is plausible that it is due to a hole in the exhaust pipe, this is the most common reason. In order to confirm this, locate someone 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 A7
The other possibility of being the subject of a muffled exhaust noise on Audi A7 is to have a part of the exhaust system that has dislocated caused by vibrations for example. Indeed some junctions of the different parts of the pot can loosen along with time and induce an exhaust gas leak in places not intended for this purpose. These fumes will then create a loud noise. Same technique as above, we go under the Audi A7 to discover the trouble place, and tighten or change the bolts. If you hear a muffled sound but after examining it doesn’t seem to come from the pot itself, think about taking a look at this content which gives answers gives solutions about rear end noises on Audi A7.
Metal rattling exhaust sound Audi A7
Damaged exhaust muffler noise Audi A7
If, alternatively, you are exposed to an exhaust sound that is more of a metallic type, it is plausible that one or more parts of your exhaust may be destroyed. Indeed, it is conceivable that either your baffles, the catalyst or the silencer are the reason of this noise. To make sure, go under your Audi A7, cold, and tap each of the previously stated parts with a hammer to discover 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 Audi A7, you will either have to find a used one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise Audi A7 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Audi A7 may be linked to a poor attachment of your exhaust to your car. Indeed, as time passes, 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 responds. 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 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 replaced.
