So you are saying you broke the line off the fitting on the gas tank return line ? This what you think happend ? More than likely you will have to drop the gas tank and replace the fitting and reinstall somt fuel line . you can use some rubber hose to hook up the old line w/ the new or get a fitting to hook the 2 lines together or run a new return line would the best way . I don't know what the fitting is called for sure .