Vacuum port on rear of carb just below bell. Vacuum tube attached and runs down back of engine(4.3 ltr. 175 hp). Can't see where it goes. My guess is fuel pump overflow but maybe a guru can chime in. Thanks in advance, Vick
Thank you commander for your swift and knowledgeable reply. I'm a seasoned wrench(cars,boats, bikes etc) but it never hurts to get another QUALIFIED opinion. Enjoy the remainder of the season my friend. Vick
