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I ordered an injector puller to be shipped. While I waited I sprayed PB Blaster and another penetrating oil about twice daily at the base of #2. Rather than wait patiently as I should have, I tried hammering #2 with a ground square end chisel, wedging the puller for tension, and levering it with a bar. Nothing worked to free the injector, but I did mess it up pretty good.
As it turns out, hammering on the injector with the squared off chisel was not a smart move. I ended up with an oil seeping crack in one corner of #2 injector valley. The good news is that so far scraping the area clean, wiping with acetone, and then sealing the valley with JB Weld seems to have worked. Doktor A commented that the aluminum head cover is as fragile as an egg shell. There are many thin areas in the casting. The pull bolt injector removal tool is designed to stay close to the injector where the casting is stronger.
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I got pretty discouraged with #2 being stuck as badly as it was. Interestingly that position didn't suffer seal leakage, but the stuff must have worked over to it. Cracking the aluminum head cover was a real bonehead move. It either happened when the chisel slipped one time, or from just too much hitting of the injector body while trying to loosen it. Most of that was when I was waiting for the puller to come from Eurpoarts. I should have had more patience and just waited.
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If the injector doesn't come out you can re-install the hold down claw with the old bolt just snug, soak penetrating oil and still drive it. That said, having new extra hold down bolts and seals is a very good idea in case you need to remove and re-install any injector(s).
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