Vent tube with efi tank? Need your opinion Please!

67Dart273 said

By the way the nipple in the sending unit is NOT a vent. Return, maybe.

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No not on this pump unit. On the left in the picture with the 45* fitting is the return and on the right with the straight fitting is the sending (pump) side. The breather nipple is in the middle with a hose plug on it.