lately my car starts and then stops and then runs fine after I start it again. Its a standard old set up with the quadrajet and rod and spring choke on the manifold.When I tried to adjust the choke it started then wouldnt start until it sat for afew hours and then I had to crank it for awhile before it turned over. This is the first time that has happened. I checked the hoses and noticed that on fast idle cam, when I pull off the distributer advance vacuum hose it slows down the engine, but on normal idle cam on the other side of the carb there is no difference in egine speed when I pull off that vacuum hose . Obviously I don't really know a lot about carb/advance hose relationship to the engine vacuum. Ive rebuilt a few different carbs fine over the years, but never ran into this problem or situation. Does this ring a bell with anyone who knows about this stuff?