Tacoma 2WD L4-2.4L (2RZ-FE) (1996)
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Vacuum Check Valve: Testing and Inspection
1. REMOVE CHECK VALVE.
2. INSPECT CHECK VALVE.
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Check that air flows from the orange pipe to the black pipe.
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Check that air does not flow from the black pipe to the orange pipe.
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If operation is not as specified, replace the check valve.
3. REINSTALL CHECK VALVE.
HINT: Reinstall the check valve with the orange pipe facing the EGR vacuum modulator side.
