It is rarely pleasing to hear a sound you don’t know about, and which results from your car. Thus, what if you identify an exhaust noise that is persistant on your Citroen C4 Picasso 2? It is highly probable that this is a minor issue, however, before being sure, it is better to operate some inspections. Our team has written this to support you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your Citroen C4 Picasso 2 and second, if you have a metallic rattling noise on your Citroen C4 Picasso 2.
Muffled exhaust noise Citroen C4 Picasso 2
Exhaust pipe with holes Citroen C4 Picasso 2
Having a muffled sound from its exhaust is not insignificant and can end up in 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 Citroen C4 Picasso 2, it is plausible that it is due to a hole in the exhaust pipe, this is the most classic reason. To be able to validate this, locate someone under the running motor vehicle and accelerate to help them determine the source of the hole. Once identified, 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 Citroen C4 Picasso 2
The other possibility of being subjected to a muffled exhaust noise on Citroen C4 Picasso 2 is to have a part of the exhaust system that has dislocated because of vibrations for example. In fact some junctions of the different parts of the pot can loosen with 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 Citroen C4 Picasso 2 to define the issue location, and tighten or change the bolts. If you hear a muffled sound but after verifying it doesn’t seem to come from the pot itself, consider looking at this document which gives solutions gives solutions about rear end noises on Citroen C4 Picasso 2.
Metal rattling exhaust sound Citroen C4 Picasso 2
Damaged exhaust muffler noise Citroen C4 Picasso 2
If, on the other hand, you are subject to an exhaust sound that is more of a metallic type of, 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 cause of this noise. To be certain, go under your Citroen C4 Picasso 2, cold, and tap each of the previously stated parts with a hammer to define 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 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 Citroen C4 Picasso 2, you will either have to find a second hand one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise Citroen C4 Picasso 2 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Citroen C4 Picasso 2 may be connected to a poor attachment of your exhaust to your vehicle. In fact, over the years, 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 behaves. 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 changed.
