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Q45
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Repair and Diagnosis
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Engine Control System - Introduction
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Positive Crankcase Ventilation
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Component Inspection
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PCV Valve Ventilation Hose
PCV Valve Ventilation Hose
Check hoses and hose connections for leaks.
Disconnect all hoses and clean with compressed air. If any hose cannot be freed of obstructions, replace.
Fig 1: Disconnecting All Hoses And Cleaning Compressed Air
Courtesy of NISSAN MOTOR CO., U.S.A.