It is never pleasant to perceive a sound you don’t know about, and which originates from your car. So, what if you spot an exhaust noise that remains on your Toyota 4Runner? It is highly possible that this is a minimal issue, however, before being sure, it is better to carry out some verifications. 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 4Runner and second, if you have a metallic rattling noise on your Toyota 4Runner.
Muffled exhaust noise Toyota 4Runner
Exhaust pipe with holes Toyota 4Runner
Having a muffled sound from its exhaust is not insignificant and can cause over-consumption, or a malfunction of the engine unit, which could after a while become dirty, for example. If you have an exhaust noise on your Toyota 4Runner, it is plausible that it is due to a hole in the exhaust pipe, this is the most typical explanation. In order to validate this, position somebody under the running motor car and accelerate to help them determine the starting point 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 Toyota 4Runner
The other possibility of being confronted with a muffled exhaust noise on Toyota 4Runner is to have a part of the exhaust system 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 Toyota 4Runner to discern the issue region, 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, consider having a look at this content which gives answers gives solutions about rear end noises on Toyota 4Runner.
Metal rattling exhaust sound Toyota 4Runner
Damaged exhaust muffler noise Toyota 4Runner
If, alternatively, you are subject to an exhaust sound that is more of a metallic sort of, it is plausible that one or more parts of your exhaust may be broken. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the induce of this noise. To be sure, go under your Toyota 4Runner, cold, and tap each of the previously stated parts with a hammer to discern 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 Toyota 4Runner, you will either have to find a second hand one and do it yourself, or go to your technician.
Metal rattling exhaust noise Toyota 4Runner : Silentblock, loose pot
Finally, a metallic exhaust noise on your Toyota 4Runner may be related to a poor attachment of your exhaust to your car. In fact, over time, vibrations, the pot fasteners on the car chassis can come off. In this case, you need to examine, 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 examine 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.
