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: Radar Sensor (Front) (Some models)
Your vehicle is equipped with a radar sensor (front). The following systems also use the radar sensor (front). Distance Recognition Support System (DRSS) Mazda Radar Cruise Control (MRCC) Smart Brake Support (SBS) The radar sensor (front) functions by detecting the radio waves reflected ...

Mazda 6 Service Manual: Engine tune-up
IGNITION TIMING INSPECTION Note Ignition timing is not adjustable. Ignition timing verification requires WDS or equivalent. 1. Turn off the electrical loads. 2. Warm up the engine as follows. (1) Start the engine. (2) Maintain the engine speed at approx. 3,000 rpm until the cooli ...