It is never pleasant to find out a sound you don’t know about, and which comes from your car. So, what if you notice an exhaust noise that persists on your Citroen Grand C4 Picasso? It is highly probable that this is a small trouble, however, before being sure, it is better to accomplish some investigations. Our team has made this to help you fix it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Citroen Grand C4 Picasso and second, if you have a metallic rattling noise on your Citroen Grand C4 Picasso.
Muffled exhaust noise Citroen Grand C4 Picasso
Exhaust pipe with holes Citroen Grand C4 Picasso
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 after a while become dirty, for example. If you have an exhaust noise on your Citroen Grand C4 Picasso, it is possible that it is due to a crack in the exhaust pipe, this is the most common cause. To be able to validate this, locate a friend or relative under the running motor car and accelerate to help them determine the starting point of the hole. Once located, 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 Grand C4 Picasso
The other possibility of being confronted with a muffled exhaust noise on Citroen Grand C4 Picasso 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 over time and generate an exhaust gas leak in places not intended for this goal. These fumes will then create a loud noise. Same technique as above, we go under the Citroen Grand C4 Picasso to identify the trouble location, and tighten or swap the bolts. If you hear a muffled sound but after verifying 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 Citroen Grand C4 Picasso.
Metal rattling exhaust sound Citroen Grand C4 Picasso
Damaged exhaust muffler noise Citroen Grand C4 Picasso
If, alternatively, you are subject to an exhaust sound that is more of a metallic type, it is possible 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 be sure, go under your Citroen Grand C4 Picasso, cold, and tap each of the previously stated parts with a hammer to identify 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 replacing it, as well as the silencer. In this case, to stop the exhaust noise on your Citroen Grand C4 Picasso, you will either have to find a second hand one and do it yourself, or go to your technician.
Metal rattling exhaust noise Citroen Grand C4 Picasso : Silentblock, loose pot
Finally, a metallic exhaust noise on your Citroen Grand C4 Picasso may be in connection with a poor attachment of your exhaust to your car. In fact, after some time, vibrations, the pot fasteners on the car chassis can come off. In this case, you need to examine, 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 unit, the more fixed it should be. Visually examine 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.
