Mazda 6 Service Manual: No.6 cranks normally but will not start

No.5 engine stalls-after start/at idle

No.7 slow return to idle

Other materials:

Mazda 6 Service Manual: Bright-Metal Maintenance
Use tar remover to remove road tar and insects. Never do this with a knife or similar tool. To prevent corrosion on brightmetal surfaces, apply wax or chrome preservative and rub it to a high luster. During cold weather or in coastal areas, cover bright-metal parts with a coating of ...

Mazda 6 Service Manual: Active Adaptive Shift (AAS)
Active Adaptive Shift (AAS) automatically controls the transaxle shift points to best suit the road conditions and driver input. This improves driving feel. The transaxle may switch to AAS mode when driving up and down slopes, cornering, driving at high elevations, or depressing the accelerato ...