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Home >> Honda >> 1979 >> Civic Base, 2D Hatchback, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Emissions System - Air Injection System >> Testing >> Check Valve
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Check Valve

Disconnect check valve hose at valve. Start and idle engine. Check that air is being drawn into the valve and that no exhaust gas is being forced out. If exhaust gas is forced out, replace check valve.

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