I yanked out my engine for detailing and took off the back line that goes to the compressor and a small spring came out. Now I'm ready to put everything back in and can't find the stupid thing anywhere! Does anyone know if I need that spring, what it's for, and if I do need it, anyone have one??? I'd post a picture, but I don't have the spring to show! It's on a 69 Charger and the line is the one on the back of the compressor. Any help would be appreciated.

Cheers