Replacement Fuel Pump - What do you do with Third Fuel Line? Options

[ChrisFix]

The fuel pump in my 74 1.8 L-Jet seems to be dead. I plan to pick up the Bosh single inlet/single outlet pump at Napa (Part Number: BSH 69133). The dual relay at the battery checks out good, and when I turn on the ignition, I get a single click from the fuel pump, but no priming/whirring sound - and no fuel delivery. Engine will fire if I squirt a bit of starter fluid in the intake snorkel, then quickly dies.

What exactly do you need to do with the 3rd fuel line on the current pump? I've found a few posts that simple say "convert it to 2-line pump", but I'm out of my depth with knowing what to do that won't compromise the car's, or my, safety. I searched but couldn't find any drawings or pictures of how to route the lines, or what to do with the 3rd line.

Any detailed advice would be welcomed!

Thank you,
Chris

[RJMII]

74 has the fuel pump up front?

I have replacement fuel pump in mine. (Not exactly a 1.8 L-Jet)

I pulled fuel from the tank to the walbro-xxx; then on the pressure side I have a 'T'. One one part of the T is a modern plastic High Pressure fuel pump fuel line that goes through the tunnel, and to the engine. On the other part of the T is the fuel pressure regulator. The pressure side goes in on the side, and the relief side goes out the bottom, and back to the tank.

I just have the one fuel line through the car now, and it is modern stuff that doesn't break down like the older plastic ones.

Not sure if this helps for the 1.8 setup you have, but it works for what I'm running. :-)

[ChrisFix]

74 has the fuel pump up front?

I have replacement fuel pump in mine. (Not exactly a 1.8 L-Jet)

I pulled fuel from the tank to the walbro-xxx; then on the pressure side I have a 'T'. One one part of the T is a modern plastic High Pressure fuel pump fuel line that goes through the tunnel, and to the engine. On the other part of the T is the fuel pressure regulator. The pressure side goes in on the side, and the relief side goes out the bottom, and back to the tank.

I just have the one fuel line through the car now, and it is modern stuff that doesn't break down like the older plastic ones.

Not sure if this helps for the 1.8 setup you have, but it works for what I'm running. :-)

74 1.8 has the fuel pump under the car tucked up beside the passenger side longitudinal - right beside the heat exchanger. The electrical connector was scorched on the outside!

I'm looking at replacing the tunnel lines with metal. What type of plastic lines are you using? Sounds like they might be less expensive and easier to install?