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: Rear door lock actuator inspection
Door Lock Actuator 1. Disconnect the front door lock actuator connector. 2. Apply battery positive voltage to the front door lock actuator terminals and inspect the operation of the front door lock actuator. If not as specified, replace the front door lock actuator. With double locking ...

Mazda 6 Service Manual: Vehicle speedometer sensor removal/installation
Without ABS 1. Disconnect the negative battery cable. 2. Remove the battery and battery tray. 3. Remove the air cleaner compornent. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) 4. Disconnect the vehicle speedometer sensor connector. 5. Remove the vehicle speedometer sensor. 6. Apply transmi ...