1. Remove the air filter.
2. Inspect the air filter.
Note

Air filter removal/installation
A/c unit removal/installationMazda 6 Service Manual: Hazard Warning Flasher
The hazard warning lights should always be used when you stop on or near a roadway
in an emergency.
The hazard warning lights warn other drivers that your vehicle is a traffic hazard
and that they must take extreme caution when near it.
Depress the hazard warning flasher and all the turn s ...
Mazda 6 Service Manual: Front drain hose installation
Caution
If the front drain hose is pinched or bent anywhere, the water in the hose
may not discharge and enter the inside of the vehicle. During and after
installation of the trims and the headliner, always make sure there is no
interference with the front drain hose. Fix any problem if found ...