I have a 1984 Ford F-150 with an I6 engine and a motorcraft carburetor. The truck absolutely will not idle. So I got to looking at the carburetor, and found this red hose going from the carb to a metal pipe, the pipe was just dangling there not connected to anything, and the end it rusted off. I'm pretty sure I know where the other end is supposed to go to, I just don't know how to get there as obviously I am missing some parts and I can't find them so they must have been lost on the road somewhere.
It didn't go there. You need to plug that barb if it is open. That's a big vacuum leak. Look around the exhaust manifold where the other end of the choke pipe (wrapped in insulation) goes. It probably goes in that area.
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