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: Recommendations for Shifting
Upshifting For normal acceleration and cruising, Mazda recommends these shift points: *1 Always observe local speed limit regulations. Downshifting When you must slow down in heavy traffic or on a steep upgrade, downshift before the engine starts to overwork. This gives better acceleration w ...

Mazda 6 Service Manual: How to use USB mode
This unit does not support a USB 3.0 device. In addition, other devices may not be supported depending on the model or OS version. USB devices formatted to FAT32 are supported (USB devices formatted to other formats such as NTFS are not supported). Playback 1. Select the icon on the home ...