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Home >> Mercury >> 1976 >> Capri II Base, 2.3L Eng, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Crankcase Ventilation >> Testing >> PCV Valve >> 1978-79 Courier (2.3L Engine)
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1978-79 Courier (2.3L Engine)

Remove oil filler cap. Hold PCV Tester (V-44) securely over opening in valve cover to prevent leaking. Start engine, operate at idle. If check ball settles in Green area, system is okay. If check ball settles in Red (bad) area, system requires servicing.