It is never pleasant to listen to a sound you don’t know about, and which will arrive from your car. So, what if you spot an exhaust noise that is persistant on your Bmw Serie 3 F30? It is highly probable that this is a small trouble, however, before being sure, it is better to carry out some investigations. Our team has made this to help you solve it. First, we will look at the possible causes if you have a muffled exhaust sound on your Bmw Serie 3 F30 and second, if you have a metallic rattling noise on your Bmw Serie 3 F30.
Muffled exhaust noise Bmw Serie 3 F30
Exhaust pipe with holes Bmw Serie 3 F30
Having a muffled sound from its exhaust is not insignificant and can lead to over-consumption, or a malfunction of the engine unit, which could in time become dirty, for example. If you have an exhaust noise on your Bmw Serie 3 F30, it is plausible that it is due to a crack in the exhaust pipe, this is the most common reason. To be able to verify this, position a friend or relative under the running motor vehicle and accelerate to help them identify the source 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 Bmw Serie 3 F30
The other possibility of being subjected to a muffled exhaust noise on Bmw Serie 3 F30 is to have a part of the exhaust system that has dislocated as a consequence of vibrations for example. Indeed some junctions of the different parts of the pot can loosen with time and cause an exhaust gas leak in places not intended for this purpose. These fumes will then generate a loud noise. Same technique as above, we go under the Bmw Serie 3 F30 to determine the trouble location, and tighten or swap the bolts. If you hear a muffled sound but after verifying it doesn’t seem to come from the pot itself, think about having a look at this content which gives solutions gives solutions about rear end noises on Bmw Serie 3 F30.
Metal rattling exhaust sound Bmw Serie 3 F30
Damaged exhaust muffler noise Bmw Serie 3 F30
If, alternatively, you are subject to an exhaust sound that is more of a metallic type, it is plausible that one or more parts of your exhaust may be broken. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the reason of this noise. To be sure, go under your Bmw Serie 3 F30, 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 Bmw Serie 3 F30, you will either have to find a used one and do it yourself, or go to your technician.
Metal rattling exhaust noise Bmw Serie 3 F30 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Bmw Serie 3 F30 may be connected to a poor attachment of your exhaust to your vehicle. Indeed, over the years, vibrations, the pot fasteners on the vehicle 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 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 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 replaced.
