I'm replacing all the fuel line in my '78 FJ40. I started from the tank on a hose nipple located about midway up the tank on driver's side. The line went through the floor,along the frame, then it STOPPED! Someone had plugged it ??? It obviously isn't needed so couldn't I just plug it at the tank with a short section of hose with a bolt clamped in it? What was that line for?