It is rarely pleasant to find out a sound you don’t know about, and which originates from your car. So, what if you detect an exhaust noise that persists on your Nissan Micra? It is highly possible that this is a small trouble, however, before being sure, it is better to conduct some verifications. Our team has written this to support you resolve it. First, we will look at the possible causes if you have a muffled exhaust sound on your Nissan Micra and second, if you have a metallic rattling noise on your Nissan Micra.
Muffled exhaust noise Nissan Micra
Exhaust pipe with holes Nissan Micra
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 finally become dirty, for example. If you have an exhaust noise on your Nissan Micra, it is plausible that it is due to a crack in the exhaust pipe, this is the most common reason. In order to validate this, locate someone under the running motor car and accelerate to help them locate the starting point 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 Nissan Micra
The other possibility of being the subject of a muffled exhaust noise on Nissan Micra is to have a part of the exhaust device that has dislocated because of vibrations for example. Indeed some junctions of the different parts of the pot can loosen after a while and induce an exhaust gas leak in places not intended for this purpose. These fumes will then produce a loud noise. Same technique as above, we go under the Nissan Micra to discern the trouble place, and tighten or replace 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 which gives solutions gives solutions about rear end noises on Nissan Micra.
Metal rattling exhaust sound Nissan Micra
Damaged exhaust muffler noise Nissan Micra
If, alternatively, 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 broken. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the reason of this noise. To confirm, go under your Nissan Micra, cold, and tap each of the previously stated parts with a hammer to discern 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 replacing it, as well as the silencer. In this case, to stop the exhaust noise on your Nissan Micra, you will either have to find a second hand one and do it yourself, or go to your auto technician.
Metal rattling exhaust noise Nissan Micra : Silentblock, loose pot
Finally, a metallic exhaust noise on your Nissan Micra may be in connection with a poor attachment of your exhaust to your car. Indeed, after some time, vibrations, the pot fasteners on the car 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 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 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.
