Mazda MX-6 1998, Workshop Manual, Page: 487 / 1282

EMISSION SYSTEM
AIR FILTER INSPECTION
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1. Remove the air filter. 4. If not as specified, replace the air filter.
2. Blow air into port A and verify that air smoothly
flows from port B.
3. Blow air into port B and verify that air smoothly
flows from port A.
TO EVAPORATIVE
PRESSURE CONTROL VALVE INSPECTION
1. Remove the pressure control valve.
2. Attach an air hose to the SST.
3. Set the SST to port A and plug port B as shown in
the figure.
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8. If there is no airflow, replace the pressure control
valve.
9. Set the SST to port A, C and plug port B as
shown in the figure.
W 6 U 1 1 6 W A 4
4. Verify that there is airflow from port D when
pressure of +0.98 kPa {+7.4 mmHg, +0.29 inHg}
is applied to port A.
5. If there is no airflow, replace the pressure control
valve.
6. Set the SST to port B, C and plug port A as
shown in the figure.
W 6 U 1 1 6 W A 5
7. Verify that there is airflow from port D when
pressure of +0.98 kPa {+7.4 mmHg, +0.29 InHg}
is applied to port B, C.
10. Verify that there is no airflow from port D when
pressure of +0.98 kPa {+7.4 mmHg, +0.29 inHg}
is applied to port A, C.
11. If there is airflow, replace the pressure control
valve.
12. Set the SST to port D and plug port B.
13. Verify that there is airflow from port A when
pressure of +0.98 kPa {+7.4 mmHg, +0.29 inHg}
is applied to port D.
14. If there is no airflow, replace the pressure control
valve.
PLUG
0 1 -1 6 -4