new fuel injectors?????

I found out my geo wont run right because a fuel injector is plugged i drained all of the old fuel and put some new gas and injector cleaner in and it did help a little but i had it run for around 45 min to an hour and it didnt completely fix the problem i think i will have to put new injectors in. unless someone knows of a different way to clean injectors without taking them out if nobody knows of a way to do that i was just wondering if there is any big problems i might encounter if i put new injectors in

It'd be cheaper to buy a whole injector assembly from Ebay or a junkyard. Looks just like a carb, bolts onto the intake manifold.