I was leaning over my engine looking at spark plugs, when I cracked the hose nipple on a part on the left side of my engine on the top, I'm trying to indentify part. I believe it is a vacumn component. It is maybe 4 inches by 2 inches with a hose coming off it with a odor of gasoline with suction when I put my finger over the hole. I need a engine diagram.or any other ideas. thanks