Fuel line patch/replace

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Old Mar 29, 2024 | 06:00 PM
  #1  
71OldsCut's Avatar
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Fuel line patch/replace

Hi,

Looks like my 1971 Cutlass 350 (no A/C) needs some fuel line work. There is a small leak right under the passenger door where the fuel lines makes that jog around the frame. I would like to replace the entire line when I can, but it's more work that I am able to do right now. I instead plan to just bend up a piece of 3/8" line to match that section, cut the bad part out and use some rubber fuel line and clamps to connect the new metal as a temporary solution.

Seems simple enough, but I am wondering if there is a connection near the tank that is accessible that I could remove and plug or some way to block the fuel flow before I cut into the line? Of course it's full, lol. If I have to drain it so be it. Just wondered if there is an easier way. Thanks!
Old Mar 29, 2024 | 06:28 PM
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The connections from the tank to the metal fuel lines are rubber hoses. You can remove and plug those, and I suggest replacing those sections of rubber as they are likely hard as rock after all these years.
Old Mar 29, 2024 | 06:30 PM
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I figured if there is rubber line back there it would be rough. That should be 3/8" too I assume? Also, that is accessible from under the car with the tank in place?
Old Mar 29, 2024 | 06:44 PM
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I think it’s accessible, assuming you can crawl under there.
Old Mar 29, 2024 | 06:49 PM
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Ok, I will have to take a look tomorrow. I was under there earlier but just saw 3 or 4 lines and some rubber connections and wasn't exactly sure what I was looking at. I found some piping diagrams later but they make it look like the fuel line connection is above the tank.
Old Mar 31, 2024 | 12:07 PM
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In order to change the rubber lines, from the sending unit to the hard lines, the tank has to come down,
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