Remove the fuel rail. The injector is held in place by a plate with 2 screws. Remove those screws and pull the injector out. I'll leave it to you to figure out the harness clip. Oh... release the fuel pressure before you do this too.
Well we did it w/o taking the fuel rail out. We'd figured all that out, except the stupid thing still wouldn't come out. It finally did after much wiggling and cussing.
Apparantly my injecter has been dying a slow death. After replacing it, my steering wheel (and hence my engine) no longer shakes. Yesterday if finally died and I had to drive home on 3 cylinders for about 5 miles. Ah well, all fixed now. It got a new cap, rotor, plugs and plug wires too.