HiCustomer you need a special tool to work with that pesky little spring, with out it you are fighting a loosing battle. Any parts store, pretty cheap. I like to support the door on a floor jack covered with rags to protect the paint and have an assistan hold it steady for me. Thanks
J 36604 Door Hinge Spring Compressor
Caution: Before removing the spring, cover the spring with a towel to prevent the spring from flying and possibly causing damage or personal injury.
Use a soft-faced hammer and locking pliers in order to remove the hinge pins.
Remove and discard the old bushings.