Evaporative Emission Control Canister: Testing and Inspection

Charcoal Canister Inspection



1. REMOVE CHARCOAL CANISTER.
2. VISUALLY INSPECT CHARCOAL CANISTER.



- Look for cracks or damage.

3. CHECK FOR CLOGGED FILTER AND STUCK CHECK VALVE.



(a) Using low pressure compressed air [4.71 kPa (0.68 psi)], blow into port C and check that air flows without resistance from the other ports.



(b) Blow air [4.71 kPa (0.68 psi)] into port A, and check that air does not flow from the other ports.



(c) Blow air [4.71 kPa (0.68 psi)] into port B and check that air does not flow from the other ports.
^ If operation is not as specified. replace the charcoal canister.

4. CLEAN FILTER IN CANISTER.



- Clean the filter by blowing 294 kPa (43 psi) of compressed air into port C while holding port A and B closed.

NOTICE:
- Do not attempt to wash the canister.
- No activated carbon should come out.

5. REINSTALL CHARCOAL CANISTER.