It is never pleasing to discover a sound you don’t know about, and which comes from your car. So, what if you find an exhaust noise that persists on your Bmw Serie 3? It is highly probable that this is a minimal issue, however, before being sure, it is better to operate some investigations. Our team has created this to help you solve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Bmw Serie 3 and second, if you have a metallic rattling noise on your Bmw Serie 3.
Muffled exhaust noise Bmw Serie 3
Exhaust pipe with holes Bmw Serie 3
Having a muffled sound from its exhaust is not insignificant and can cause over-consumption, or a malfunction of the car engine, which could eventually become dirty, for example. If you have an exhaust noise on your Bmw Serie 3, it is possible that it is due to a hole in the exhaust pipe, this is the most common cause. To be able to confirm this, situate a friend or relative under the running motor automobile and accelerate to help them discover the starting point of the hole. Once located, 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 3
The other possibility of being confronted with a muffled exhaust noise on Bmw Serie 3 is to have a part of the exhaust unit that has dislocated because of 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 goal. These fumes will then produce a loud noise. Same technique as above, we go under the Bmw Serie 3 to discover the issue area, and tighten or swap the bolts. If you hear a muffled sound but after examining it doesn’t seem to come from the pot itself, think about looking at this content page which gives solutions gives solutions about rear end noises on Bmw Serie 3.
Metal rattling exhaust sound Bmw Serie 3
Damaged exhaust muffler noise Bmw Serie 3
If, alternatively, you are exposed 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 injured. Indeed, it is conceivable that either your baffles, the catalyst or the silencer are the induce of this noise. To make sure, go under your Bmw Serie 3, cold, and tap each of the previously stated parts with a hammer to discover 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 Bmw Serie 3, you will either have to find a used one and do it yourself, or go to your auto technician.
Metal rattling exhaust noise Bmw Serie 3 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Bmw Serie 3 may be connected to a poor attachment of your exhaust to your automobile. Indeed, after some time, vibrations, the pot fasteners on the automobile 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 behaves. 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 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 swapped.
