Mazda 626 MX-6 Workshop Manual page 315

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3. Warm up the engine and run it at idle.
4. Connect a vacuum pump to the valve and apply
vacuum.
5. Check that the engine runs roughly or stalls at more
than the specified vacuum.
Specification:
40—60 mmHg (1.6—2.4 inHg)
6. If not correct, replace the EGR control valve.
86U04B-116
Vacuum Chamber
1. Disconnect the vacuum hoses from the vacuum
chamber, and remove it.
2. Connect the vacuum pump to the vacuum cham­
ber as shown.
3. Apply vacuum and check that no vacuum is held.
4. If not correct, replace the vacuum chamber.
5. Connect the vacuum pump to the vacuum cham­
ber as shown.
6. Apply vacuum and check that vacuum is held.
7. If not correct, replace the vacuum chamber.
86U04B-118
4B
EGR SYSTEM
4B-95
1