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: Compression pressure
COMPRESSION INSPECTION Warning Hot engines and oil can cause severe burns. Be careful not to burn yourself during removal/installation of each component. 1. Verify that the battery is fully charged. Recharge it if necessary. (See BATTERY INSPECTION.) 2. Warm up the engine to the no ...

Mazda 6 Service Manual: Installation of radio system
If a radio system is installed improperly or if a high-powered type is used, the CIS and other systems may be affected. When the vehicle is to be equipped with a radio, observe the following precautions: Install the antenna at the farthest point from control modules. Install the antenna fe ...