I've pulled out a few swollen glowplugs over the past years. This is my recepie:
Remove injector. Apply wice-grip tool on the glowplug. And now comes my invention: Use a small hose and connect to a vacume-cleaner. Put the end of the hose into the injector hole. Move the wice-grip up'n'down, until the pluwplug tip break off. The tip will breake off and be sucked into the wacume cleaner. Insert injector. Install new AC60G glowplug.
I've done it this way a lot of times, and never "lost" a broken glowplug-tip.
Trond L.
Norway
Trond Lorenskogen<br />1992 Chevy 4X4 Van,<br />HD 6,2 Diesel with Ram-Air,<br />matched ports,+1/4pump adjustment,Peninsular hi-flow water pump,glow-plug/wireing mods,lifted 4\",35\"Mud-tires,winch,grilleguard<p>New toy: M1028 Chevy K30 pick up, millitary 1 1/4 ton