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: Lane-Change Signals and Three-Flash Turn Signal
Lane-Change Signals Move the lever halfway toward the direction of the lane change—until the indicator flashes— and hold it there. It will return to the off position when released. Three-Flash Turn Signal After releasing the turn signal lever, the turn signal indicator flashes three times ...

Mazda 6 Service Manual: Replacing a Tire
WARNING Always use tires that are in good condition: Driving with worn tires is dangerous. Reduced braking, steering, and traction could result in an accident. Replace all four tires at the same time: Replacing just one tire is dangerous. It could cause poor handling and poor braking resulting ...