can you replace the fuel line with rubber line instead of metal line and does anyone know why the gas guage reads 3/4 full when its completely full
If you mean the entire fuel line, it wouldn't be safe to expose rubber line to the hazards underneath a car and you sure don't wanna run the line inside the car. The gauge may not read correctly for several reasons; sending unit float is absorbing gasoline, sender is going bad, dash panel voltage regulator is going bad, poor connection to dash panel, poor ground at sending unit...
theres not that much fuel pressure in these cars so if you have to replace a section with rubber it'll be ok, just as long as theres no sorrounding hazzards. definatly would only do as much as i absoulty needed tho