It is rarely pleasant to notice a sound you don’t know about, and which comes from your car. Thus, what if you discover an exhaust noise that persists on your Renault Koleos? It is highly possible that this is a minor problem, however, before being sure, it is better to operate some investigations. Our team has created this to support you resolve it. First, we will look at the possible causes if you have a muffled exhaust sound on your Renault Koleos and second, if you have a metallic rattling noise on your Renault Koleos.
Muffled exhaust noise Renault Koleos
Exhaust pipe with holes Renault Koleos
Having a muffled sound from its exhaust is not insignificant and can cause over-consumption, or a malfunction of the car engine, which could after a while become dirty, for example. If you have an exhaust noise on your Renault Koleos, it is plausible that it is due to a crack in the exhaust pipe, this is the most common cause. In order to validate this, situate a friend or relative under the running motor car and accelerate to help them discover 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 replaced.
Element dislocated exhaust pipe Renault Koleos
The other possibility of being confronted with a muffled exhaust noise on Renault Koleos is to have a part of the exhaust unit that has dislocated as a consequence 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 goal. These fumes will then generate a loud noise. Same technique as above, we go under the Renault Koleos to discern the problem area, and tighten or replace the bolts. If you hear a muffled sound but after verifying it doesn’t seem to come from the pot itself, think about having a look at this content page which gives answers gives solutions about rear end noises on Renault Koleos.
Metal rattling exhaust sound Renault Koleos
Damaged exhaust muffler noise Renault Koleos
If, alternatively, 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 damaged. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the reason of this noise. To be certain, go under your Renault Koleos, cold, and tap each of the previously stated parts with a hammer to discern 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 Renault Koleos, you will either have to find a resale one and do it yourself, or go to your technician.
Metal rattling exhaust noise Renault Koleos : Silentblock, loose pot
Finally, a metallic exhaust noise on your Renault Koleos may be in connection with a poor attachment of your exhaust to your car. Indeed, over time, vibrations, the pot fasteners on the car 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 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 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 replaced.
