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: Remote handle lever removal/installation
4SD 1. To remove the remote wire, remove the trunk side trim. 2. Remove in the order indicated in the table. 3. Install in the reverse order of removal. 5HB 1. To remove the remote wire, remove the trunk side upper trim and trunk side trim. 2. Remove in the order indicated in the table. ...

Mazda 6 Service Manual: Rear door speaker inspection
1. Inspect for resistance between the rear door speaker terminals using an ohmmeter. If not as specified, replace the rear door speaker. 2. To verify that the rear door speaker outputs sound, apply voltage to the rear door speaker and release using a 1.5-V battery. If not outputs ...