It is rarely pleasant to hear a sound you don’t know about, and which comes from your car. So, what if you find an exhaust noise that is persistant on your Alfa Romeo 159? It is highly possible that this is a minimal issue, however, before being sure, it is better to operate some investigations. Our team has made this to support you solve it. First, we will look at the possible causes if you have a muffled exhaust sound on your Alfa Romeo 159 and second, if you have a metallic rattling noise on your Alfa Romeo 159.
Muffled exhaust noise Alfa Romeo 159
Exhaust pipe with holes Alfa Romeo 159
Having a muffled sound from its exhaust is not insignificant and can end 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 Alfa Romeo 159, 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, position somebody under the running motor automobile and accelerate to help them discover 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 Alfa Romeo 159
The other possibility of being suffering from a muffled exhaust noise on Alfa Romeo 159 is to have a part of the exhaust device that has dislocated as a consequence 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 Alfa Romeo 159 to define the issue area, 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, consider looking at this document which gives solutions gives solutions about rear end noises on Alfa Romeo 159.
Metal rattling exhaust sound Alfa Romeo 159
Damaged exhaust muffler noise Alfa Romeo 159
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 weakened. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the cause of this noise. To be sure, go under your Alfa Romeo 159, cold, and tap each of the previously stated parts with a hammer to define 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 Alfa Romeo 159, you will either have to find a second hand one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise Alfa Romeo 159 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Alfa Romeo 159 may be linked to a poor attachment of your exhaust to your automobile. In fact, after some time, vibrations, the pot fasteners on the automobile 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, 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.
