isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

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Air Switching Valve <--> [Air Injection Control Valve] > < Air Injection Check Valve|Description and Operation

Pickup 2WD L4-2.3L (4ZD1) (1988)

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Air Injection Check Valve: Testing and Inspection

Remove check valve and test for leakage by first blowing air into valve through pump side and then through air manifold side. Air should flow
through air pump side only. If air flows through air manifold side, replace valve. Note that a small amount of air flow through the manifold side is
acceptable.

Air Switching Valve <--> [Air Injection Control Valve] > < Air Injection Check Valve|Description and Operation