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Home >> Mazda >> 1991 >> B2200 LE-5, 2D Pickup, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - CARBURETED >> PCV Valve Emission Systems & Sub-Systems
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PCV Valve Emission Systems & Sub-Systems

Warm engine to normal operating temperature. Run engine at idle. Disconnect PCV valve with ventilation hose from cylinder head cover. Block PCV valve opening with a finger and verify engine speed drops.

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