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Evaporative Emission Control System?

slickseventeen
in Engine & Drivetrain

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Well I have a '73 240z and right now im refinishing the L24 engine. It has a four barrel Holley Carb. set up and I was wondering if I still needed the Flow Guide Valve? The person who set it up a long time ago left it in place and it looks weird not being hooked up to anything but the Vapor vent line which goes to the Vapor Liquid separator, above the gas tank. Thanks for any help.

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