Subaru LEGACY B4 Purge Control Valve Issues

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Subaru LEGACY B4 Purge Control Valve Issues Issues Discussion

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Subaru LEGACY B4 Purge Control Valve Issues

Purge control valve is the part of EVAP system of Subaru LEGACY B4 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 Subaru LEGACY B4, when the engine turns over.