Not sure exactly what procedure you're using, but once the nut is removed from the stud, and the taper is broken free from the knuckle/center link (dependent on outer or inner), the tie rod should just simply be threaded out of the sleeve. To pop it out of the knuckle/center link, there's 2 methods. One is to use a
tie rod separator, commonly called a pickle fork. Generally, those will cut the boot. The other way is to rap the side of the knuckle/center link where the tie rod stud goes through. It is best to use a brass hammer for this to prevent damage. Do not hit the end of the stud, it won't work, and you'll end up bunging up the threads on the end of the tie rod.