Hummer H1 Purge Control Valve Issues

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Hummer H1 Purge Control Valve Issues

Purge control valve is the part of EVAP system of Hummer H1 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 Hummer H1, when the engine turns over.

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