1995 Dodge Spirit tapping coming from the injector

i have a tapping coming from the injector, along with this the car will idle for about 10 min and shut off i ture the key off and back on it fires right up. if it is ran for more than 30min it will start to sputter and when u put the gas to the floor it well shut off the olny way to keep it runnin is to pump the gas. i replaced the ignition coil im gettin alittle lost with this car