Solenoid Valve (Purge Control); Two-Way Check Valve - Mazda MX-5 1990 Workshop Manual

EVAPORATIVE EMISSION CONTROL SYSTEM
F
05UOFX-184
GROUND
' S r2V
05UOFX-185
INSTALLATION DIRECTION
05UOFX-186
05UOFX-187
SOLENOID VALVE (PURGE CONTROL)
On-vehicle Inspection
1. Warm up the engine to normal operating temperature.
2. Run the engine at idle.
3. Disconnect the vacuum hose from the solenoid valve and
verify that no vacuum is felt at the solenoid valve.
4. If not as specified, check the solenoid valve.
Inspection
1. Discor.lnect the vacuum hoses from the solenoid valve.
2. Verify that no air flows through the valve.
3. Disconnect the solenoid valve conneQtor and connect 12V
and a ground to the terminals of the solenoid valve.
4. Verify that the air flows through the valve.
5. If not as specified, replace the solenoid valve.
TWO-WAY CHECK VALVE
Inspection
1. Remove the valve.
2. Check the operation of the valve with a vacuum pump.
Apply approx. 37 mmHg (1.46 inHg)
vacuum at port A
Apply approx. 44 mmHg (1.73 inHg)
vacuum at port B
FUEL VAPOR VALVE
Inspection
1. Remove the valve.
Airflow
Airflow
2. Blow through the valve and verify that air flows in the direc-
tion shown.
F-119