how can i remove ignition lock. when key will not turn.

this may take special tools seek help

Try rapidly tapping on the lock cylinder while turning key. I was able to get a lock cylinder to turn by using my air chisel [with a blunt chisel installed] to rap on the lock cyl. housing while turning the key at the same time. The rapid vibrations from the chisel caused the lock tumblers to giggle around and align themselves allowing me to turn the key.