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Home >> Chevrolet >> 1987 >> Spectrum Express >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Evaporation System >> Component Testing >> Charcoal Canister

Charcoal Canister

  1. 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.
  2. 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.
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