Buick Envision Purge Control Valve Issues

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Buick Envision Purge Control Valve Issues Issues Discussion

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Buick Envision Purge Control Valve Issues

Purge control valve is the part of EVAP system of Buick Envision and it works to prevent the emergence of vapors in the fuel tank to escape into the air. These vapors are prevented to escape in the air and they are pumped into the engine during different driving conditions, where they burnt. If the purge valve is not fully closed, they can create problems like rough starting or problems running of used Buick Envision, when the engine turns over.