Gas tank Swap

[Shinnysideup]

My fuel gauge has never worked on my 80 CJ 5 and finally I got tired of that. The reaserch I found said it was likley the fuel sending unit. I took the tank off to replace the fuel sending unit and found a bunch of pin holes in my tank. Back to the store for a new tank. I went with the same 15 gal capacity in steel.

My question is on the 2 lines on the opposite side of the tank from the fill.

Does it matter if the lines are on the correct bung?

I hooked everything back up and put 5 gallons in and I am not getting any fuel to the filter. I have replaced everything in the fuel system except the lines and fuel pump.

Everything but the gauge was working before I took it apart.

Any ideas?

 

[rdaffin]

I think one is a return and one is a pick-up. Try swapping the lines!

 

[54cj3b]

is your pump in tank you may have a broken wire or forgot to connect it
I do that a lot these days old age setting in

 

[jps4jeep]

Wondering, what do you have for a motor?

a factory 1980 CJ should not have an intank pump, and it should not have a return line. you most likely switched the tank vent and the supply line.

 

[Shinnysideup]

It is a 258 straight 6 with a mechanical fuel pump on the engine. There were 2 fuel lines that hooked to the fuel sending unit and 1 for the fill 1 for the vent by the fill and 2 on the opposite side. Think one may be for a charcol filter but am not sure. The 2 extra lines are plastic where they come into the tank with short pieces of rubber fuel line to connect them to the tank.

I am going to install a new fuel pump this weekend and see if that helps. As far as I can tell the current fuel pump is stock.

 

[tjlboise]

This has nothing to do with anything other than my own curiosity, but when you were putting in your username, did you mean SHINY instead of shinny? I couldn't help it. I have to ask.