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: Recording of Vehicle Data
This vehicle is equipped with a computer which records the following main vehicle data related to vehicle controls, operation, and other driving conditions. Recorded data Vehicle conditions such as engine speed and vehicle speed Driving operation conditions such as accelerator and brake ped ...

Mazda 6 Service Manual: Seat warmer switch inspection
1. Remove the seat warmer switch. 2. Inspect for continuity between the seat warmer switch terminals using an ohmmeter. If not as specified, replace the seat warmer switch. Drivers side Passengers side ...