Mike this sort of crush-fitting is used in high pressure hydraulics handling pressures hundreds of times higher than in the DeLorean fuel system. I reckon the end of the hard line coming out from the frame probably had some grit on it when you tightened it up. It's not the threads that create the seal, so teflon tape won't help. Just pull them apart, and make sure both sides of the fitting are clean, then reassemble. Martin #1458 billsfanmd@xxxx wrote: > > Whoever designed this fuel hose system &^%$# ....I would just like to weld > the entire hose to the fuel line than worry each day that a leak has returned > becasue a thread is a millionth of an inch loose....Anybody have this problem > and how did you solve it? > > Thanks > > Mike in Baltimore > 2109