Mazda 6 Service Manual: No.25 a/c is not cut off under wide open throttle conditions

No.24 a/c is always on or a/c compressor runs continuously

No.26 exhaust sulphur smell

Other materials:

Mazda 6 Service Manual: Rocking the Vehicle
WARNING Do not spin the wheels at more than 56 km/h (35 mph), and do not allow anyone to stand behind a wheel when pushing the vehicle: When the vehicle is stuck, spinning the wheels at high speed is dangerous. The spinning tire could overheat and explode. This could cause serious injuries. ...

Mazda 6 Service Manual: Parking brake (lever type) adjustment
1. Start the engine and depress the brake pedal several times. 2. Stop the engine. 3. Remove the ashtray behind the center console. 4. Turn the adjusting nut as shown in the figure. 5. After adjustment, inspect the following points: (1) Turn the ignition switch to ON, pull the parking brak ...