the easiest way how to "check" injectors, buy Mopar injectors cleaner and if you will see a difference, car will run more smoothly means in 80 % one of the injectors is leaking, that's mean it's time to start thinking to replace the injector.
I'll buy some (even used but with some warranty injector) and replace one by one take more time but you will save money it really easy to replace injector in that car.
I'll recommend the only Mopar injectors cleaner you can find some on eBay or Amazon, nothing from "Tesco" or petrol station - that's poo - tested on my car