Mazda 6 Service Manual: No.7 slow return to idle

No.6 cranks normally but will not start

No.8 engine runs rough/rolling idle

Other materials:

Mazda 6 Service Manual: Thermostat
THERMOSTAT REMOVAL/INSTALLATION 1. Remove the plug hole plate. 2. Disconnect the negative battery cable. 3. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS.) 4. Remove the drive belt. (See DRIVE BELT REPLACEMENT.) 5. Remove the washer tank. 6. Remove the P/S oil pump. Note ...

Mazda 6 Service Manual: Front door key cylinder removal/installation
1. Remove the front door unit. 2. Remove the cover, then remove the bolt. 3. For protector-equipped vehicles, pull out the protector tab from the latch and remove the protector. 4. Disconnect the rod. 5. Remove the front outer handle. 6. Turn the key cylinder in the direction indicated by ...