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

[Cap'n Krusty]

Be aware the replacement relays available today may not be plug 'n play. Once you hack on it to make it fit, it's yours. BTW, there were more than 1 double relay, and they're functionally different. Look at the relay diagram printed (or embossed) on the side. Before you do anything else, put a test light on the FP power wire on the relay and see if it lights up when you activate the flap. Next, make the same test at the pump connection. Test the ground there at the same time.

The Cap'n

[ChrisFix]

Be aware the replacement relays available today may not be plug 'n play. Once you hack on it to make it fit, it's yours. BTW, there were more than 1 double relay, and they're functionally different. Look at the relay diagram printed (or embossed) on the side. Before you do anything else, put a test light on the FP power wire on the relay and see if it lights up when you activate the flap. Next, make the same test at the pump connection. Test the ground there at the same time.

The Cap'n

Thanks, I'll take a look at that tomorrow when I'm home. I purchased the relay with 11 pins, like the one that I have on my car (they sell one with 13 pins as well). This is what I bought:

http://www.autohausaz.com/search/product.a...%20Pump%20Relay

Hopefully, it is a direct replacement. It won't arrive until early next week.

Also, do you know what size & type (and how much) of fuel line do I need to get if I put in a new Bosch fuel pump and bypass the Y connector?