View Full Version : Help please, OEM C5 fuel pump line identification
beeman
12-20-2019, 12:44 PM
I couldn't find this in the buildmanual or Corvette sites...
Red1 dumps into the fuel tank
Red2 is a hard line off the fuel pump
Red3 is connected to the pump housing via a flexible line
Green 1 enters center of fuel filter
Green 2 is adjacent to Green1
Green 3 leaves the filter, I believe to the fuel rail?
What gets capped vs connected?
Thanks!
Dave
EDIT: Found this diagram, thanks again guys!
http://www.hotwireauto.com/webimages/99_Corvette_Fuel_Filter.jpg
119244
119245
As you are doing such a great job with this build of yours, I would personally recommend using the 2004 and later in tank fuel pump, a bit more expensive, but boy is is easy to connect and disconnect, I have had to removed my tank few time, I have is one quick disconnect and done, not even one drop of fuel. I also have no cross connections and will never leak, two pump, and hardware to control them.
Mostafa
VRaptor SpeedWorks, LLC
12-20-2019, 11:23 PM
This is from memory....so no guarantees here.
Red 3 is fuel pump pressure
Red 2 is return line from fuel filter.
Red 1 is/was the return from the jet pump in the opposite tank.
Green 3 is the output that connects to fuel rail on engine.
Green 1 or 2 connects to pump pressure or return and vice versa....I do not recall which is which off the top of my head.
So really, the only port that gets capped off is Red 1.....assuming you are also capping off all lines in the GTM non-pump tank.
This Simple with intank version.
119272
VRaptor SpeedWorks, LLC
12-23-2019, 09:17 AM
Just looked at the GTM in the shop here and I had Red 2 and Red 1 reversed.....I just edited/fixed that in my post above. And the car I have out here is not using the OEM filter, so I'm still not sure which of those are which from memory....
claybags
12-23-2019, 09:47 AM
Dave,
On the filter … 1 is the return line to the tank, 2 is the pressure feed from the pump, and 3 is out to the fuel rail.
cheers and happy holidays, Jeff
beeman
12-23-2019, 12:06 PM
Thanks guys!
Merry Christmas!