It is rarely pleasing to discover a sound you don’t know about, and which results from your car. So, what if you discover an exhaust noise that remains on your Bmw Serie 1 F21? It is highly probable that this is a small issue, however, before being sure, it is better to execute some verifications. 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 1 F21 and second, if you have a metallic rattling noise on your Bmw Serie 1 F21.
Muffled exhaust noise Bmw Serie 1 F21
Exhaust pipe with holes Bmw Serie 1 F21
Having a muffled sound from its exhaust is not insignificant and can cause 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 Bmw Serie 1 F21, it is plausible that it is due to a hole in the exhaust pipe, this is the most regular explanation. In order to confirm this, locate somebody under the running motor vehicle and accelerate to help them find the origin of the hole. Once found, if it is not too large you can cold seal it with specific metallic mastic type legs. Otherwise, the section will have to be changed.
Element dislocated exhaust pipe Bmw Serie 1 F21
The other possibility of being confronted with a muffled exhaust noise on Bmw Serie 1 F21 is to have a part of the exhaust device that has dislocated as a consequence of vibrations for example. In fact some junctions of the different parts of the pot can loosen along with time and generate an exhaust gas leak in places not intended for this goal. These fumes will then generate a loud noise. Same technique as above, we go under the Bmw Serie 1 F21 to determine 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, think about looking at this content page which gives answers gives solutions about rear end noises on Bmw Serie 1 F21.
Metal rattling exhaust sound Bmw Serie 1 F21
Damaged exhaust muffler noise Bmw Serie 1 F21
If, alternatively, you are subject to an exhaust sound that is more of a metallic sort of, it is plausible that one or more parts of your exhaust may be injured. Indeed, it is possible that either your baffles, the catalyst or the silencer are the reason of this noise. To be sure, go under your Bmw Serie 1 F21, cold, and tap each of the previously stated parts with a hammer to determine 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 Bmw Serie 1 F21, you will either have to find a used one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise Bmw Serie 1 F21 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Bmw Serie 1 F21 may be connected to a poor attachment of your exhaust to your vehicle. In fact, as time passes, vibrations, the pot fasteners on the vehicle 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 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 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 changed.
