IA10 - Check One-Way Check Valve

One-Way Check Valve:

^ Disconnect and remove the check valve located under the intake manifold.

^ Blow through port A and verify that air flows from port B.

^ Blow through port B and verify that air does not flow from port A.

^ Does one-way check valve function properly?

YES -- Go to IA11. IA11 - Check Vacuum Chambers

NO -- Replace the one-way check valve.