how serious is a purge flow
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2003 Dodge Stratus Question: i have a purge flow or leak
Answer #1patrick mannion from Greg Solow's Engine Room, March 18, 2011, 17:04Master
It is an emission control issue. It causes the fuel vapors in the gas tank not to be recycled properly and so reducing pollutants from your car. It could depending on the type of failure you have result in a rich or a lean running condition for your engine and result in the Check Engine Light to remain illuminated.