When I had the car apart last winter, I replaced the plastic fuel lines with flexible metal tubing, cranked up the diameter of the supply line for the presumably thirstier six. When I was yanking the old plastic stuff, there was a third very skinny tube that I believe went from the plastic tank on top of the fuel tank back to the engine air filter(?) (this is on a '76). I decided it wasn't important and did not replace it
.
Now, of course, is a fine time to ask, but what was this sucker for, and where did it really go from/to? I assumed it was some rudimentary environmental plumbing, and since my car is past the 25 yr old threshold of environmental pain here in CT, I ignored it. Am getting the occasional whiff of gas fumes, my connections are dry, figure this "missing link" might be the culprit. If I restore it, where might I hook it up to my 3.2, any opinions?