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: Ignition coil inspection
Primary Coil Winding 1. Remove the ignition coil. 2. Measure the resistance between the following lead holes using an ohmmeter. A and B, B and C - If not specified, replace the ignition coil. Specification 0.49-0.57 ohms [20°C {68°F}] Secondary Coil Winding 1. Remove the igni ...

Mazda 6 Service Manual: Using Automatic Locking Mode (Some models)
Follow these instructions when using a child-restraint system, unless you are attaching a LATCH-equipped childrestraint system to the rear LATCH lower anchors. Refer to “Using LATCH Lower Anchor”. NOTE Follow the child-restraint system manufacturer's instructions carefully. If you are no ...