the hose leading from my fuel filter to the engine has a pressure guage (installed by the previous owner). there is fuel leaking out from the connections of the pressure guage and the hose seems to be extremely weak at the connection point. what do i do?

 

if the gas line is leaking DO NOT DRIVE THE CAR! thats a serious fireball hazard!

try to tighten the connections first and if that doesnt work then remove the fittings and get new copper crush washers and just to be alittle safer use some teflon tape on the threads of the lines, just be sure you dont put the tape over any of the line openings, and if that doesnt work then replace the hose and washers.
guess it all depends where its leaking from. typically its just the lines from reusing the old crush washers and after they crush once they are typically no good.