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: How to Arm the System
1. Close the windows and the moonroof  securely (some models). 2. Switch the ignition OFF. 3. Make sure the hood, the doors, and the trunk lid are closed. 4.Press the lock button on the transmitter or lock the driver's door from the outside with the auxiliary key. The hazard warning light ...

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 ...