Charcoal Canister
- Remove charcoal canister. Check for cracks or damage. Apply 7 psi (5 kg/cm2 ) pressure to port marked "V.C." Air should not escape from diaphragm.
- Apply and maintain 15 in. Hg vacuum to port marked "PURGE". Gradually apply vacuum to port "V.C." If vacuum reading on "PURGE" port goes down at pressure of 1.6-3.2 in. Hg, purge control valve is good. If any problem is found, replace charcoal canister.