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Variable Induction Check Valve: Testing and Inspection
VARIABLE AIR DUCT (VAD) CHECK VALVE (ONE-WAY) INSPECTION 1.
Remove the VAD check valve (one-way) (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION)
2.
Blow through A and verify that air flows from B.
3.
Blow through B and verify that air does not flow from A
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If not as specified, replace the VAD check valve (one-way).