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: Schedule 2
    Chart symbols:   I : Inspect: Inspect and clean, repair, adjust, fill up, or replace if necessary. R : Replace L : Lubricate C : Clean T : Tighten Remarks:   *1 Use of FL-22 is recommended when replacing engine coolant. Using engine coolant other than FL ...

Mazda 6 Service Manual: Oil pan
OIL PAN REMOVAL/INSTALLATION Warning Hot engine and engine oil can cause severe burns. Turn off the engine and wait until it and the engine oil have cooled. 1. Disconnect the negative battery cable. 2. Remove the under cover. 3. Drain the engine oil. (See ENGINE OIL REPLACEMENT.) 4. Re ...