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: Dtc b1318
Caution When attaching the tester lead to the ABS (ABS/TCS) HU/CM harness connector, the SST (49 G066 001) must be used. (See ABS (ABS/TCS) HU/CM INSPECTION.) Diagnostic procedure ...

Mazda 6 Service Manual: Oil seal (differential) replacement
1. On level ground, jack up the vehicle and support it evenly on safety stands. 2. Drain the oil from the transaxle. 3. Remove the front wheels and splash shields. 4. Separate the drive shaft and joint shaft from the transaxle. (See DRIVE SHAFT REMOVAL/INSTALLATION.) (See JOINT SHAFT REMOVAL/ ...