How do I stop vapor lock?

Survey says!!!

I need to determine if the fuel pump is malfunctioning. That is easy enough, I will replace it. I also need to look into an electric fuel pump. The third thing is to determine if the bowl vent is opening/working. Like one of ya'll said, I don't have the information or experience with adding a fuel return line. There is a line there I could easily "T" into, but I don't know it that will work. It goes from the sending unit to near the top of the filler tube. Which I don't even know if that is correct. The easiest thing that I can do is try a new cap.

I am in a pinch for time and don't even have time to change out the fuel pump before my trip. But I have to go. Do or die. If the fuel pump quits on me, I can just replace it. I have a spare. If the pressure builds again, I can disconnect the fuel line again and vent the pressure.

In a perfect world, I could investigate and fix the problem with no problem. Problem is I am pinched for time, don't have a lot of money, no Chrysler manuals to go by, and I do not have any really experienced mechanics that know what a Mopar is to ask. So you guys are it. I have to go on this trip. Maybe I can explain more later, but it is imperative that I go. If it dies on the side of the road, I can try to fix it. But I have to go.

Thanks for all your replies. I will let you know how my trip went when I get back...