Tried to remove #1 injector, very slight black death symptoms just started on #2 and #4, so I thought I would do them all. Sprayed some PB Blaster a couple times, drove for a week+, got engine over 180 degrees, hold down bolt came out easily, injector won't budge. Left bolt a turn or so loose, safety wired in place and drove hard, nothing, drove some miles and I can see air bubbles from leakage, but injector won't budge. Van is very clean, garaged for nine years before I purchased, so corrosion very limited. I have read all the thread pages on removal techniques, at a loss now, don't want to damage anything, or disassemble injector, heard horror stories already....