Canister Purge Valve

The canister purge valve allows stored fuel vapors in the containment canister to be recycled back into the engine combustion process when necessary. Charcoal Canister

Symptoms of a Bad or Failing Canister Purge Valve

• Check Engine Light may illuminate
• Rougher than normal engine idle

Canister Purge Valve Related Repair Advice

• Evaporative system diagnosis can be difficult and trouble codes can be triggered by sensors and components other than the canister purge valve
• It is not uncommon for bits of charcoal to separate from the charcoal brick inside the canister and cause the canister purge valve to stick in the open or closed position