Pro tip: used to pull injectors with a pry bar, now I use a $14 slide hammer
Back in my shop days in Toledo I'd wedge a pry bar under the injector hold-down and hope it popped loose before I cracked the head. Bought a cheap slide hammer adapter 6 months ago and the last stubborn one came out in about 30 seconds instead of 20 minutes of cussing. Anybody got a trick for the ones that are really carbon-welded in there?