He all, I am rebuilding my carb. The are 1/4 inch clear lines that T off and plug into the two nipples top rear of carb. Where does the other end go? It looks like the third end pluged into something but it is only 8 inches long and for the life of me I can not find where. My 13 year old boy was helping and getting some education so I thought that maybe one of our hands knocked it loose or does it just vent up?