Mazda 6 Service Manual: No.4 hard to start/long crank/erratic start/erratic crank

No.3 will not crank

No.5 engine stalls-after start/at idle

Other materials:

Mazda 6 Service Manual: Scheduled Maintenance (U.S.A., Canada, and Puerto Rico)
Follow Schedule 1 if the vehicle is operated mainly where none of the following conditions (severe driving conditions) apply. Repeated short-distance driving Driving in dusty conditions Driving with extended use of brakes Driving in areas where salt or other corrosive materials are used ...

Mazda 6 Service Manual: Operating Tips for WMA
WMA is short for Windows Media*1 Audio and is the audio compression format used by Microsoft*1. Audio data can be created and stored at a higher compression ratio than MP3. This unit plays files with the extension (.wma) as WMA files. *1 Windows Media and Microsoft are registered trademarks of ...