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Fuel Pump Line Identification

Old 07-15-2019, 04:27 PM
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Car: '16 Camaro SS, '88 IROC
Engine: 6.2 Gen V
Transmission: 6 spd TR6060
Fuel Pump Line Identification

I had neglected to label the four lines coming out of the in tank fuel pump. The feed line is obvious, with the screw fitting. So is the return, being 3/8". The question I have is which of the two 5/16" lines is the vent and which is the vapor line. Each of the smaller lines is a little different so they are easy to tell apart. Can anyone tell me which is which?
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