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: Refrigerant system service procedures
GAS CHARGING SET INSTALLATION 1. Fully close the valves of the SST (49 C061 001). 2. Connect the SSTs (49 C061 002, 49 C061 003) to the high- and low-pressure side joints of the SST (49 C061 001). 3. Connect the SSTs (49 C061 006A, 49 C061 007) to the ends of the SSTs (49 C061 002, 49 C061 00 ...

Mazda 6 Service Manual: Service cautions
HANDLING INSUFFICIENT REFRIGERANT LEVEL If an insufficient refrigerant level is detected at troubleshooting, do not charge (add) the refrigerant. Because an accurate amount of refrigerant cannot be determined from the pressure indicated on the manifold gauge, never charge the refrigeran ...