Ignition Timing

1. Warm engine tooperating temperature. Check engine condition (spark plugs, leaks in hoses, etc.).
2. Turn all electrical loads OFF.
3. Connect Mazda SST #49 B019 9A0 to diagnosis connector.

Fig. 2 Diagnostic Connector:

NOTE: If SST is not used, jump across TEN and GND terminals of diagnostic connector.

CAUTION: Use care when making connections to diagnosis connector. Improper connection will damage the ECU.

Connecting Tachometer And Timing Light:

4. Connect timing light.
5. Connect tachometer to diagnosis connector IG- terminal.
6. Set SST switch "A" to position 1.
7. Set TEST SW to SELF-TEST.
8 Apply parking brake.
9. Check that idle speed is within specification.

670 ± 30 rpm (Neutral or P range)

NOTE: Check idle speed without electric cooling fan operating.

Timing Marks:

10. Check if timing mark on crankshaft pulley and mark on timing belt cover are aligned.

10 ± 1° BTDC

Distributor Lock-Down Bolts:

11. If marks are not aligned, loosen distributor lock bolts and turn distributor to adjust.
12. Tighten lock bolts to 14 - 19 ft-lb (19 - 25 Nm).
13. After adjustment, disconnect SST or remove jumper wire.