Mazda 6 Service Manual: No.5 engine stalls-after start/at idle

No.4 hard to start/long crank/erratic start/erratic crank

No.6 cranks normally but will not start

Other materials:

Mazda 6 Service Manual: Replacing Windshield Wiper Blades
When the wipers no longer clean well, the blades are probably worn or cracked. Replace them. CAUTION To prevent damage to the wiper arms and other components, do not try to sweep the wiper arm by hand. NOTE When raising both windshield wiper arms, raise the driver's side wiper arm first. W ...

Mazda 6 Service Manual: Replacing Exterior Light Bulbs
Headlights (With LED headlights) Low/High beam bulbs The LED bulb cannot be replaced as a single unit because it is an integrated unit. The LED bulb has to be replaced with the unit. We recommend an Authorized Mazda Dealer when the replacement is necessary. Headlights (With halogen headlight ...