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

[kmwvmarip]

I replaced mine with the engine in and it was not bad at all. A good friend can help nudge it through the tunnel.

I do however wish that I had the engine out for convenience when replacing the vacuum hoses and fuel lines in the engine compartment. Live and learn. In the end it all stayed in the car.

I swear that the zee Churmans had a race of monkeys with a few extra wrist joints to do some of the things they had to do.

[ChrisFix]

I replaced mine with the engine in and it was not bad at all. A good friend can help nudge it through the tunnel.

I do however wish that I had the engine out for convenience when replacing the vacuum hoses and fuel lines in the engine compartment. Live and learn. In the end it all stayed in the car.

I swear that the zee Churmans had a race of monkeys with a few extra wrist joints to do some of the things they had to do.

I think I'm going to drop the engine at the same time...I have very leaky push rod tubes that need to be addressed, and a thorough going over is not out of order at this point. To my knowledge, the engine has never been out of this car (only has 43K miles), but after 40 years, there are plenty of things that could use some TLC. And with the engine out, I can replace all the engine/injector fuel lines and vacuum hoses very easily.