Mazda 6 Service Manual: No.12 lack/loss of power-acceleration/cruise

No.11 engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges

No.13 knocking/pinging-acceleration/cruise

Other materials:

Mazda 6 Service Manual: Wheel alignment pre-inspection
1. Inspect the tire inflation, and adjust to the recommended pressure as necessary. 2. Inspect the front wheel bearing play and correct it if necessary. (See Wheel Bearing Play Inspection.) 3. Inspect the wheel and tire runouts. (See SUSPENSION.) 4. Inspect the ball joints and steering linkag ...

Mazda 6 Service Manual: Ignition switch inspection
1. Disconnect the negative battery cable. 2. Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION) 3. Disconnect the ignition switch connectors. 4. Inspect for continuity between the ignition switch terminals using an ohmmeter. If not as specified, replace the ignition switch. ...