It is rarely pleasant to perceive a sound you don’t know about, and which comes from your car. Thus, what if you discover an exhaust noise that is persistant on your Toyota Corolla? It is highly probable that this is a small issue, however, before being sure, it is better to accomplish some investigations. Our team has produced this to support you solve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Toyota Corolla and second, if you have a metallic rattling noise on your Toyota Corolla.exhaust-noise-toyota-corolla

Muffled exhaust noise Toyota Corolla

Exhaust pipe with holes Toyota Corolla

Having a muffled sound from its exhaust is not insignificant and can cause over-consumption, or a malfunction of the car engine, which could in time become dirty, for example. If you have an exhaust noise on your Toyota Corolla, it is possible that it is due to a hole in the exhaust pipe, this is the most common cause. To be able to confirm this, situate a friend or relative under the running motor automobile and accelerate to help them discover the origin of the hole. Once found, 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 Toyota Corolla

The other possibility of being subjected to a muffled exhaust noise on Toyota Corolla is to have a part of the exhaust system that has dislocated as a consequence of vibrations for example. In fact some junctions of the different parts of the pot can loosen over time and induce an exhaust gas leak in places not intended for this purpose. These fumes will then generate a loud noise. Same technique as above, we go under the Toyota Corolla to discover the issue place, and tighten or swap the bolts. If you hear a muffled sound but after checking it doesn’t seem to come from the pot itself, think about looking at this document which gives solutions gives solutions about rear end noises on Toyota Corolla.

Metal rattling exhaust sound Toyota Corolla

Damaged exhaust muffler noise Toyota Corolla

If, alternatively, you are subject to an exhaust sound that is more of a metallic sort of, it is possible 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 reason of this noise. To make sure, go under your Toyota Corolla, cold, and tap each of the previously stated parts with a hammer to discover 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 Toyota Corolla, you will either have to find a resale one and do it yourself, or go to your auto technician.

Metal rattling exhaust noise Toyota Corolla : Silentblock, loose pot

Finally, a metallic exhaust noise on your Toyota Corolla may be in connection with a poor attachment of your exhaust to your automobile. In fact, over the years, 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 behaves. 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 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 replaced.