It is rarely pleasant to find out a sound you don’t know about, and which will arrive from your car. So, what if you detect an exhaust noise that continues on your BMW 2 Series? It is highly possible that this is a minor issue, however, before being sure, it is better to operate some verifications. Our team has created this to support you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your BMW 2 Series and second, if you have a metallic rattling noise on your BMW 2 Series.
Muffled exhaust noise BMW 2 Series
Exhaust pipe with holes BMW 2 Series
Having a muffled sound from its exhaust is not insignificant and can end in over-consumption, or a malfunction of the car engine, which could in time become dirty, for example. If you have an exhaust noise on your BMW 2 Series, it is plausible that it is due to a crack in the exhaust pipe, this is the most common explanation. To be able to confirm this, locate someone under the running motor vehicle and accelerate to help them discover 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 2 Series
The other possibility of being suffering from a muffled exhaust noise on BMW 2 Series is to have a part of the exhaust system that has dislocated caused by vibrations for example. In fact some junctions of the different parts of the pot can loosen over time and generate 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 2 Series to discover the issue place, 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, consider having a look at this article which gives answers gives solutions about rear end noises on BMW 2 Series.
Metal rattling exhaust sound BMW 2 Series
Damaged exhaust muffler noise BMW 2 Series
If, on the other hand, 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 injured. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the cause of this noise. To be certain, go under your BMW 2 Series, 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 out of date catalyst, it will be necessary to consider changing it, as well as the silencer. In this case, to stop the exhaust noise on your BMW 2 Series, you will either have to find a used one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise BMW 2 Series : Silentblock, loose pot
Finally, a metallic exhaust noise on your BMW 2 Series may be linked to a poor attachment of your exhaust to your vehicle. In fact, over time, 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 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.
