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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: gntblue on January 19, 2014, 09:12:31 pm

Title: Fuel line and mystery line.
Post by: gntblue on January 19, 2014, 09:12:31 pm

Frame off restoration of a 74 k10.  I have all of the brake lines routed and i need to order the fuel lines.  The truck had a two output sending unit coming out of the tank.  Now obviouly i know which line was the fuel line since it was hooked to the fuel pump.  But. There is a second line that ran up with the fuel line and then turned and followed the front cross member acorss the truck.  I cant remember what that line was for.  Is this a return line or a vapor line?  What does it connect to?

I will upload an image tomorrow when i get to work.


Thanks

Title: Re: Fuel line and mystery line.
Post by: bd on January 19, 2014, 10:56:18 pm

5/16" vapor line to the carbon canister.

Title: Re: Fuel line and mystery line.
Post by: gntblue on January 21, 2014, 08:19:57 pm

Thanks thats what i thought