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: Rocking the Vehicle
WARNING Do not spin the wheels at more than 56 km/h (35 mph), and do not allow anyone to stand behind a wheel when pushing the vehicle: When the vehicle is stuck, spinning the wheels at high speed is dangerous. The spinning tire could overheat and explode. This could cause serious injuries. ...

Mazda 6 Service Manual: Exterior Care
The paintwork on your Mazda represents the latest technical developments in composition and methods of application. Environmental hazards, however, can harm the paint's protective properties, if proper care is not taken. Here are some examples of possible damage, with tips on how to prevent th ...