It is rarely pleasant to perceive a sound you don’t know about, and which results from your car. Thus, what if you detect an exhaust noise that continues on your Bmw Serie 7? It is highly probable that this is a minimal issue, however, before being sure, it is better to operate some inspections. Our team has created this to support you solve it. First, we will look at the possible causes if you have a muffled exhaust sound on your Bmw Serie 7 and second, if you have a metallic rattling noise on your Bmw Serie 7.
Muffled exhaust noise Bmw Serie 7
Exhaust pipe with holes Bmw Serie 7
Having a muffled sound from its exhaust is not insignificant and can lead to 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 Bmw Serie 7, it is possible that it is due to a crack in the exhaust pipe, this is the most common reason. To be able to confirm this, locate somebody under the running motor car and accelerate to help them determine the source 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 Bmw Serie 7
The other possibility of being subjected to a muffled exhaust noise on Bmw Serie 7 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 after some 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 Bmw Serie 7 to discern the issue 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, consider taking a look at this content page which gives answers gives solutions about rear end noises on Bmw Serie 7.
Metal rattling exhaust sound Bmw Serie 7
Damaged exhaust muffler noise Bmw Serie 7
If, on the other hand, you are subject to an exhaust sound that is more of a metallic sort of, it is possible 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 be certain, go under your Bmw Serie 7, 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 swapping it, as well as the silencer. In this case, to stop the exhaust noise on your Bmw Serie 7, you will either have to find a resale one and do it yourself, or go to your technician.
Metal rattling exhaust noise Bmw Serie 7 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Bmw Serie 7 may be in connection with a poor attachment of your exhaust to your car. Indeed, over the years, 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 behaves. 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 swapped.
