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Home >> Mazda >> 1993 >> MPV 2WD V6-3.0L SOHC >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Adjustments >> Ignition Timing
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Ignition Timing


1. Check engine condition (spark plugs, leaks in hoses, etc.).
2. Turn all electrical loads OFF.
3. Warm engine and run for three minutes at 2500 - 3000 rpm.
4. Connect tachometer and timing light.
5. Disconnect hoses from distributor vacuum control unit; plug hoses.

Test Connector:






6. Ground test connector (green: 1-pin) with a jumper wire.
7. Check that idle speed is within specification:

M/T: 800 ± 20 rpm
A/T: 770 ± 20 rpm

8. Adjust if idle speed is not within specification.

Fig. 7 Timing Mark:






9. Check that timing mark (YELLOW) on crankshaft pulley and mark on timing belt cover are aligned.

11° ± 1° BTDC

Fig. 8 Distributor Bolts:






10. If timing is not within specification, loosen distributor lock bolts and rotate distributor housing to adjust.
11. Tighten bolts to 14 - 19 ft lb (19 - 25 Nm)
12. After adjustment, disconnect jumper wire from test connector and reconnect vacuum hoses.