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Which one of these is the feed and which is the return? Silver line is the feed and black is the return right? does it even matter?
Trying to pre plum my fuel system to start this on the engine stand before it put it in my c10... But the motor will not crank. I want to make sure I have the fuel return/feed set up properly. Looked every where but can’t find anything to reference which line is which.
L59 using an external adjustable fuel pressure regulator and a separate standard filter. Not using the corvette filter/regulator with -6 AN lines.
Black line looks like evap line with can be changed to use as a return.
Wait I thought these had a fuel return line/system built into these from the factory? Doesn’t the black line feed back into the OEM filter/regulator with the factory configuration?
My fuel pressure reg has a return port. Should I just use the return port on the regulator and either delete or just keep the evap?
Or would running evap as the return be the better option? Would doin so still throw a engine code as if it were deleted?
The black line circled, sure looks like a return to me. The pressure line has a port on it to check pressure.
It’s not, I looked last night after the post and it is the evap line. Bought a block off plate for it last night.
Originally Posted by AwesomeAuto
Those are returnless rails.
Dam this whole time I thought I had a return style. And bought my fuel system for a return setup. Hopefully just running a return off the regulator will work. If not I’m screwed and gatta go shopping again lol
Dam this whole time I thought I had a return style. And bought my fuel system for a return setup. Hopefully just running a return off the regulator will work. If not I’m screwed and gatta go shopping again lol
Considering you bought an aftermarket regulator, you're better off with the returnless rails.
The regulator is build into the rails on the return rails and you would need to block it off or bypass it all together to run an aftermarket regulator.
Considering you bought an aftermarket regulator, you're better off with the returnless rails.
The regulator is build into the rails on the return rails and you would need to block it off or bypass it all together to run an aftermarket regulator.
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Fuel return/fuel feed question. 
