It is never pleasant to notice a sound you don’t know about, and which originates from your car. So, what if you detect an exhaust noise that persists on your Scion xB? It is highly probable that this is a minimal problem, however, before being sure, it is better to carry out some investigations. Our team has written this to help you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your Scion xB and second, if you have a metallic rattling noise on your Scion xB.
Muffled exhaust noise Scion xB
Exhaust pipe with holes Scion xB
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 finally become dirty, for example. If you have an exhaust noise on your Scion xB, it is plausible that it is due to a hole in the exhaust pipe, this is the most usual explanation. To be able to verify this, situate a friend or relative under the running motor vehicle and accelerate to help them identify the origin 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 swapped.
Element dislocated exhaust pipe Scion xB
The other possibility of being subjected to a muffled exhaust noise on Scion xB is to have a part of the exhaust unit that has dislocated due to vibrations for example. In fact 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 produce a loud noise. Same technique as above, we go under the Scion xB to define the problem place, 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 taking a look at this content page which gives answers gives solutions about rear end noises on Scion xB.
Metal rattling exhaust sound Scion xB
Damaged exhaust muffler noise Scion xB
If, alternatively, you are exposed to an exhaust sound that is more of a metallic type, it is plausible that one or more parts of your exhaust may be destroyed. Indeed, it is possible that either your baffles, the catalyst or the silencer are the induce of this noise. To make sure, go under your Scion xB, 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 changing it, as well as the silencer. In this case, to stop the exhaust noise on your Scion xB, you will either have to find a second hand one and do it yourself, or go to your technician.
Metal rattling exhaust noise Scion xB : Silentblock, loose pot
Finally, a metallic exhaust noise on your Scion xB may be linked to a poor attachment of your exhaust to your vehicle. In fact, as time passes, 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 motor, 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 swapped.
