It is rarely pleasing to discover a sound you don’t know about, and which originates from your car. Thus, what if you find an exhaust noise that remains on your Porsche 911? It is highly probable that this is a minor trouble, however, before being sure, it is better to conduct some inspections. Our team has created this to support you solve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Porsche 911 and second, if you have a metallic rattling noise on your Porsche 911.exhaust-noise-porsche-911

Muffled exhaust noise Porsche 911

Exhaust pipe with holes Porsche 911

Having a muffled sound from its exhaust is not insignificant and can lead to over-consumption, or a malfunction of the car engine, which could eventually become dirty, for example. If you have an exhaust noise on your Porsche 911, it is plausible that it is due to a hole in the exhaust pipe, this is the most common explanation. To be able to confirm this, locate someone under the running motor automobile and accelerate to help them determine 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 changed.

Element dislocated exhaust pipe Porsche 911

The other possibility of being the subject of a muffled exhaust noise on Porsche 911 is to have a part of the exhaust unit that has dislocated resulting from vibrations for example. Indeed some junctions of the different parts of the pot can loosen over 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 Porsche 911 to determine the trouble 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, think about looking at this content page which gives answers gives solutions about rear end noises on Porsche 911.

Metal rattling exhaust sound Porsche 911

Damaged exhaust muffler noise Porsche 911

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 injured. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the induce of this noise. To make sure, go under your Porsche 911, cold, and tap each of the previously stated parts with a hammer to determine 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 changing it, as well as the silencer. In this case, to stop the exhaust noise on your Porsche 911, you will either have to find a used one and do it yourself, or go to your auto mechanic.

Metal rattling exhaust noise Porsche 911 : Silentblock, loose pot

Finally, a metallic exhaust noise on your Porsche 911 may be connected to a poor attachment of your exhaust to your automobile. Indeed, after some time, vibrations, the pot fasteners on the automobile 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 unit, 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 changed.