How do I stop vapor lock?

Phreakish said
Venting varies significantly by model and year from 69~70's. If you have a vent on your filler neck and at the sender, one or the other should probably be open. My '72 has a vent line from the tank up to the engine compartment that's attached to the top of the tank.

So long as it's filtered, and possibly even a roll-over valve, having one of them vented is likely a good idea so long as it vents somewhere other than into the trunk! It should go outside to the atmosphere. It should also be above the top of the fuel tank..

I didn't see this reply till just now. I go to my statistics, look for my last post, then go from there. It was on page 2, this post was on page 3.

Anyhoo, I would like to open the vent at the filler tube and run the vent at the sending unit to the fuel filter shown earlier in the thread. But then I will have a vent into the trunk. Why would Chrysler put a vent tube into the trunk without there being a way to vent it to the outside?? Seems like there should be a way to get that to vent into the environment instead of into the trunk. Spill over seems like a real threat.

I figured out how to run the vent line from the tank to the fuel filter at the front. I can drill and attach clips to the same frame rail the fuel line is on. But what do I do with this crazy vent at the filler tube top?