Mazda 6 Service Manual: No.9 fast idle/runs on

No.8 engine runs rough/rolling idle

No.10 low idle/stalls during deceleration

Other materials:

Mazda 6 Service Manual: C-pillar trim removal/installation
4SD 1. Remove the tire house trim. 2. Turn the seaming welt over. 3. Remove the cap using a fastener remover, and remove the bolt (with curtain air bag system). 4. Disengage clips A and clip B using a fastener remover. 5. Pull the C-pillar trim forward, then disengage hook C from the body, ...

Mazda 6 Service Manual: Engine Exhaust (Carbon monoxide)
WARNING Do not drive your vehicle if you smell exhaust gas inside the vehicle: Engine exhaust gas is dangerous. This gas contains carbon monoxide (CO), which is colorless, odorless, and poisonous. When inhaled, it can cause loss of consciousness and death. If you smell exhaust gas inside the ...