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: Fuel Gauge (Without Multiinformation Display)
The fuel gauge shows approximately how much fuel is remaining in the tank when the ignition is switched ON. We recommend keeping the tank over 1/4 full. If the low fuel warning light illuminates or the fuel level is very low, refuel as soon as possible. Refer to Warning Lights. NOTE ...

Mazda 6 Service Manual: Clutch pedal adjustment
Clutch Pedal Height Measure the distance from the upper surface of the pedal pad to the carpet. If not as specified, adjust the pedal height by turning adjustment bolt B and locknut A. Pedal height(with carpet) L.H.D.: 210-216 mm {8.27-8.50 in} R.H.D.: 209-215 mm {8.23-8.46 in} ...