Dj5 Fuel System (amc 232)

I was trying to make heads or tails of the fuel system in a 1970 DJ5. It would seem that the system originally included a vapor separator, and has a total of 3 lines running back to the tank. I would like to omit this, and bring it down to bare bones to have less parts to fail.

The tank has 2 inlets that were used from the vapor sep, so I am assuming I can just loop a hose from inlet to inlet and be done with that. There is the actual filler neck which is self explanatory enough I would think. There is the fuel sending unit which only has a single wire, so I assume that would be positive, and I would ground to chassis. The sending unit also has a line out, which is what I will run to the mechanical fuel pump with a standard in-line fuel filter. lastly, there is what looks like a one way "breather" check valve next to the filler neck, so I planned on running a small line to direct any overflow away from metal / body.

Using this concept I would only need a single fuel line from tank to engine bay, or will I require a return line?

Under the hood I have the line running to the mechanical fuel pump with an in-line fuel filter. which will run to the little 1 barrel carb, sitting on the AMC 232 inline 6. I do not see any return lines, so that is why i assumed i could use a single line to the tank.

Lastly, I recall some older system used a charcoal system in conjunction with the vapor separator, but not only do i not see it, nor do i see where an outlet / return line would come from.

Any insight / photos / guidance would be greatly appreciated!

 

This is an interesting post, but as it concerns an AMC 232, you might want to move it to the Intermediate Tech Forum: Intermediate CJ-5/6/7/8

 

Thanks, reposted in that group!