Ignition Timing: Adjustments

1. Warm engine to operating temperature and check 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, install jumper wire between diagnosis connector TEN and GND terminals.

CAUTION: Be extremely careful when making connections to diagnosis connector; an incorrect 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.

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.