It is never pleasing to listen to a sound you don’t know about, and which results from your car. So, what if you detect an exhaust noise that continues on your Mazda CX 7? It is highly probable that this is a minor issue, however, before being sure, it is better to accomplish some investigations. Our team has produced this to support you fix it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Mazda CX 7 and second, if you have a metallic rattling noise on your Mazda CX 7.
Muffled exhaust noise Mazda CX 7
Exhaust pipe with holes Mazda CX 7
Having a muffled sound from its exhaust is not insignificant and can end 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 Mazda CX 7, it is possible that it is due to a crack in the exhaust pipe, this is the most classic cause. In order to validate this, position somebody under the running motor car and accelerate to help them determine the source 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 Mazda CX 7
The other possibility of being suffering from a muffled exhaust noise on Mazda CX 7 is to have a part of the exhaust system that has dislocated resulting from 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 Mazda CX 7 to determine the issue area, 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 taking a look at this content page which gives solutions gives solutions about rear end noises on Mazda CX 7.
Metal rattling exhaust sound Mazda CX 7
Damaged exhaust muffler noise Mazda CX 7
If, alternatively, you are exposed to an exhaust sound that is more of a metallic type of, it is possible that one or more parts of your exhaust may be damaged. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the cause of this noise. To be sure, go under your Mazda CX 7, cold, and tap each of the previously stated parts with a hammer to determine 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 Mazda CX 7, you will either have to find a resale one and do it yourself, or go to your technician.
Metal rattling exhaust noise Mazda CX 7 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Mazda CX 7 may be linked to a poor attachment of your exhaust to your car. Indeed, over the years, 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 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 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.
