Auto Choke Heating Line?

[CoughlinJ]

Hey all,
While tying up some loose ends on my vacuum system, I noticed a loose line that I think ran from the carb to the manifold. I looked it up and I think it's the line that heats the automatic choke. Not sure, but I was wondering if anyone might have had experiance with this. I run a 300 I6 4.9l F150 1982.
*edit
I'll snap a few pictures to show what I'm talking about.
If you click on the thumbnails, it'll take you to the full size pictures.

[inafogg]

Hello, sounds like ur right.if u r trying to repair some times u can reconnect to ex. manifold it just needs to be touching to transfer heat to carb.not to sure but may still be able to order a new one or scrap yard GOOD LUCK

[Torch]

I used to have a 77 F-250 with the 460CID V8 engine, it too had exhaust heated tubes that fed heat up into the choke on the carb. worked great for as simplistic as it was.

[CoughlinJ]

yeah, turns out the entire choke assembly on the carb was shot to hell. pulled an old one off of a junker, and my baby flew like new. the line actually was the aux fresh air intake.