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Old 09-16-2020, 07:24 PM   #1
Scooby Newbie
Member#: 386292
Join Date: Mar 2014
Default 3 fuel line junction under driver side rear seat - what's what?

So on my 05 Saabaru Aero / WRX, I've got rusty fuel lines where they route from inside the cabin to outside, just below the junction under the driver's side rear seat. This is a 15 year old New England car, so I'm not dropping the rusty tank to replace the line. Time to splice. Got my new solid 5/16" fuel line, cut the rusted area off from inside the cab, got under the car and started using my fuel line cutter to cut through the rubber coating on the lines and through the lines at the same time, and.. and.. man that fuel line cutter just twisted that fuel line.

Yep, that wasn't steel line under the rubber coating. It's some sort of plastic? And appears to be all the same material as it goes and hides above the gas tank. So, ****. I twisted the hell out of it.

Long story short, I found the parts diagram but it doesn't help to tell me what each line is. This one is some plasticky crap, one appears to be hard line (guessing steel), and the other one still has the rubber sleeve but it feels soft just like the one I cut. I'm guessing one line for fuel to the engine, one for fuel return, and maybe one for EVAP? Which one did I just bungle up, and how the hell do you splice into that plasticky-type line? Rubber fuel injector hose over it with fuel injector clamps is a maybe, but I'm not sure if the ID is correct nor if the flimsy plastic could take the pinch.

Any ideas? I've seen other people with the same issue as the routing of these lines commonly causes rust here, but nobody detailed how they managed to connect the plasticky-**** material back to the metal inside the cabin.

Thanks in advance!

EDIT: This line has a quick connect on it, so apparently it's the fuel delivery line. No luck on figuring out exactly what the plasticky-feeling line is made of or how to splice it. I twisted the **** out of it, but it doesn't seem to be leaking so maybe keep that intact with the female quick-connect, and figure out which size make quick connect needs to go into it and then rubber fuel injector hose going from there and then over the steel hardline from inside the cabin?
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Last edited by WR9-2X; 09-16-2020 at 07:35 PM.
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