It is rarely pleasant to notice a sound you don’t know about, and which will arrive from your car. Thus, what if you identify an exhaust noise that persists on your Volkswagen Passat ? It is highly probable that this is a small trouble, however, before being sure, it is better to conduct some inspections. Our team has produced this to support you resolve it. First, we will look at the possible causes if you have a muffled exhaust sound on your Volkswagen Passat and second, if you have a metallic rattling noise on your Volkswagen Passat .
Muffled exhaust noise Volkswagen Passat
Exhaust pipe with holes Volkswagen Passat
Having a muffled sound from its exhaust is not insignificant and can end in over-consumption, or a malfunction of the car engine, which could in the end become dirty, for example. If you have an exhaust noise on your Volkswagen Passat , it is plausible that it is due to a crack in the exhaust pipe, this is the most classic cause. To be able to confirm this, position somebody under the running motor automobile and accelerate to help them locate the origin 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 Volkswagen Passat
The other possibility of being suffering from a muffled exhaust noise on Volkswagen Passat is to have a part of the exhaust unit that has dislocated because of vibrations for example. Indeed some junctions of the different parts of the pot can loosen along with time and cause an exhaust gas leak in places not intended for this purpose. These fumes will then create a loud noise. Same technique as above, we go under the Volkswagen Passat to define the trouble place, and tighten or change the bolts. If you hear a muffled sound but after checking it doesn’t seem to come from the pot itself, think about having a look at this article which gives answers gives solutions about rear end noises on Volkswagen Passat .
Metal rattling exhaust sound Volkswagen Passat
Damaged exhaust muffler noise Volkswagen Passat
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 weakened. Indeed, it is conceivable that either your baffles, the catalyst or the silencer are the reason of this noise. To be sure, go under your Volkswagen Passat , 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 replacing it, as well as the silencer. In this case, to stop the exhaust noise on your Volkswagen Passat , you will either have to find a second hand one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise Volkswagen Passat : Silentblock, loose pot
Finally, a metallic exhaust noise on your Volkswagen Passat may be linked to a poor attachment of your exhaust to your automobile. Indeed, over the years, vibrations, the pot fasteners on the automobile 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 responds. 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.
