mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Positive Crankcase Ventilation > < Evaporative Emission Control Canister|Locations|Page 2497
Page 2
background image

PURGE CONTROL VALVE

Check Valve

1.

Disconnect the hose (purge valve to oil filler pipe) from the purge control valve.

2.

Start the engine and run it at idle.

3.

Place a finger over the hose opening and verify that vacuum is not felt.

4.

Increase the engine speed to 2,000 rpm; vacuum should be felt.

5.

Replace the valve, if necessary.

CHECK VALVE 

1.

Remove the check valve.

Check Valve

2.

Blow through the check valve from port "A". and check that the air flows from port "B".

3.

Blow through the check valve from port "B" and verify that there is no air flow.

Positive Crankcase Ventilation > < Evaporative Emission Control Canister|Locations|Page 2497