Return Line Question/Issue

[jackyl9999]

I am plumbing my fuel system for my 6.0 swap into my 70 GMC. I am using the stock in cab tank. I added a 2nd line to my sending unit and when I was trying to get the sending unit into the tank, the return line tube broke off at the weld. The tube was equal length to the pickup tube. Now it is flush. The return line is still solid as a rock.


Can I use this and not have any negative effects? I would think the only issue would be hearing the gas returning into the tank?

[Gobuffalo]

When the tank gets part way empty, your going to have a lot of fumes. Vapor ignites easier than liquid. If you have an in tank pump it may starve for fuel when you are low.

[BR3W CITY]

Originally Posted by jackyl9999

I am plumbing my fuel system for my 6.0 swap into my 70 GMC. I am using the stock in cab tank. I added a 2nd line to my sending unit and when I was trying to get the sending unit into the tank, the return line tube broke off at the weld. The tube was equal length to the pickup tube. Now it is flush. The return line is still solid as a rock.


Can I use this and not have any negative effects? I would think the only issue would be hearing the gas returning into the tank?

FWIW, I'm running an external pump, so I don't have an internal tubes or anything for the return...its just a fitting at the top of my tank that pee's the returned fuel back into the tank.

You won't starve the pump as long as the pickup tube itself is still fine (and you have it at the lowest point)

[jackyl9999]

Ok. I should be good then.



Thanks Brew City