Mazda 6 Service Manual: No.7 slow return to idle

No.6 cranks normally but will not start

No.8 engine runs rough/rolling idle

Other materials:

Mazda 6 Service Manual: SRS Air Bag Deployment Criteria
This chart indicates the applicable SRS equipment that will deploy depending on the type of collision. (The illustrations are the representative cases of collisions.) X: The SRS air bag equipment is designed to deploy in a collision. *1 (With Front Passenger Occupant Classification System) Th ...

Mazda 6 Service Manual: Antilock Brake System (ABS)
The ABS control unit continuously monitors the speed of each wheel. If one wheel is about to lock up, the ABS responds by automatically releasing and reapplying that wheel's brake. The driver will feel a slight vibration in the brake pedal and may hear a chattering noise from the brake system ...