| Let me ask a basic question. How are you testing which cylinder is dead? I just want to be sure you are looking at the right one... I don't suppose you dremeled the plenum while you had it off?
If you did, I would swap the injector with another cylinder and see if the problem went with it. The injector could be ohming out OK and still be clogged. Is the plug wet with fuel? Check for wetness with it cold and just start it and shut it off. If it is warmed up the fuel may evaporate before you get the plug out. If compression is good, it has to be air, fuel or spark.
Did you for any reason stuff rags in the lower plenum when you had the upper off? How did you test for spark? Did you compare the spark quality to adjacent cylinders? Is it possible you have an injector or coil connector mixed up with another cylinder? That's all I can think of for now. Good Luck! KKrofft
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