Leaking injectors

[TurboTuli]

Hey I have a 90 240sx with ka24e and my #1 injector is leaking. It seems to be leaking a good amount as it puddles up in a groove on the intake manifold. I was just wondering how likely it is if its possibly just the o-ring. Also, is it ok to just replace one injector?

[DAEDALUS]

Very likely it's the o-ring, though you can replace the one injector too if you want/need to.