Evaporative Emission Control Canister: Testing and Inspection

INSPECT CHARCOAL CANISTER




A. Visually check the charcoal canister for cracks or damage.
B. Inspect the charcoal canister operation.




1. While holding port B closed, blow air (1.76 kPa (18 kg/sq.cm, 0.26 psi)) into port A and check that air flows from port D.




2. While holding ports B and D closed, blow air (1.76 kPa (18 gf/sq.cm, 0.26 psi)) into port A and check that air does not flow from port C.




3. Apply vacuum (3.43 kPa (26 mmHg, 1.01 in.Hg)) to port B, check that the vacuum does not decrease when port C is closed, and check that the vacuum decreases when port C is released.




4. While holding port C closed, apply vacuum (1.32 kPa (10 mm Hg, 0.39 in.Hg)) to port A and check that airflows into port B.
If operation is not as specified, replace the charcoal canister.