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Home >> Saturn >> 1996 >> SW1 Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls - System/Component Tests - 4.9L) >> Emission Systems & Sub-Systems >> Air Injection (C-6) >> Check Valve

Check Valve

WARNING: This page is about a different car, the 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

Detach check valve and blow through valve in direction of check valve flow (to cylinder head). Attempt to suck air back. Replace valve if airflow is allowed against the direction of flow.

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