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: Cruise actuator removal/installation
1. Disconnect the negative battery cable. 2. Remove in the order indicated in the table. 3. Install in the reverse order of removal. Cover Removal Note Unclamp the clips of the heater hoses at the front of the cover. ...

Mazda 6 Service Manual: Battery recharging
Warning Keep any flammable away from the battery, otherwise evaporated gas of the battery fluid may catch fire, and cause serious injury or death. Caution When removing the battery, disconnect the negative battery cable first and install it last to prevent damage to electrical compo ...