It is rarely pleasing to hear a sound you don’t know about, and which will arrive from your car. Thus, what if you discover an exhaust noise that is persistant on your smart fortwo? It is highly probable that this is a minor trouble, however, before being sure, it is better to operate some investigations. Our team has written this to help you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your smart fortwo and second, if you have a metallic rattling noise on your smart fortwo.
Muffled exhaust noise smart fortwo
Exhaust pipe with holes smart fortwo
Having a muffled sound from its exhaust is not insignificant and can lead to over-consumption, or a malfunction of the engine, which could in time become dirty, for example. If you have an exhaust noise on your smart fortwo, it is possible that it is due to a crack in the exhaust pipe, this is the most classic cause. In order to verify this, position someone under the running motor vehicle and accelerate to help them locate 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 smart fortwo
The other possibility of being the subject of a muffled exhaust noise on smart fortwo 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 a while and generate an exhaust gas leak in places not intended for this goal. These fumes will then make a loud noise. Same technique as above, we go under the smart fortwo to discover the trouble location, 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 taking a look at this content page which gives answers gives solutions about rear end noises on smart fortwo.
Metal rattling exhaust sound smart fortwo
Damaged exhaust muffler noise smart fortwo
If, on the other hand, you are exposed 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 damaged. 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 smart fortwo, 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 swapping it, as well as the silencer. In this case, to stop the exhaust noise on your smart fortwo, you will either have to find a second hand one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise smart fortwo : Silentblock, loose pot
Finally, a metallic exhaust noise on your smart fortwo may be connected to a poor attachment of your exhaust to your vehicle. Indeed, over time, vibrations, the pot fasteners on the vehicle chassis can come off. In this case, you need to verify, 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 verify 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.
