[Walt Fricke]

If I understand the issue, you used some kind of epoxy or other strong adhesive to solve a problem with the plastic sleeve (the kind of thing in your pictures).

Is your problem getting the injector out? You ought to be able to rig up a way to pry on it. If you are careful, you can avoid damaging it. But if it won't come, just wait until the engine is out and you have removed the manifold.

With the manifold out, you can press on the end of the injector which is in the manifold. With care you ought not to damage the middle part of the end, where the fuel sprays out. I think you could use a wood block and a hammer. Ought to break stuff loose.

If it is the sleeve you are worrying about getting out, don't worry too much - you are going to replace it. They get a bit brittle with age, so you can break it up some. You can drive it from the manifold end. You could probably just drill it out - carefully so you don't hit the aluminum, but enough so you can get the rest out.

And with the manifold out, and the injector out, trying heat would be an option - as long as you keep it down below the aluminum melting point you may be good. You could pull another sleeve and try the heat on it.

Having six new sleeves on hand is always a good precaution when pulling injectors, even though usually nothing bad happens.