79 ranchero 351/400M 2v carb. 1. What the heck when the defogger blows heat but it doesn't defog the front windshield. Heat comes up from the dash defog vents but actually fogs up the window instead of defogging it. Only much later on does the windshield begins to clear from the heat. It seems there's some smoke (but it aint smoke cause it don't smell like smoke or coolant) gets blown through the cabin. 2. Car seems to be running rougher since I reconnected my air pump that goes into the intake manifold. Where exactly does the air pump air go to. I know it smog related but . . . . .?