No but if not closing off it could be over fuelling that cylinder seriously. Producing black smoke out of the tailpipe. What I would be more concerned about is the oil passage to the head that I believe is just ahead of the first cylinder.

That is where the head gasket may have failed. That's why is suggested rolling the engine over with the injector removed and see if oil is being spit out of that cylinder. Head gasket failure is not as common on your engine as on the newer versions but can still happen. A leaky head gasket might also add pressure to the engine driving oil out of it. Anyways I would do the test with the injector out first. Basically an engine should not have a blowby type symptom at that milage. This being the oil forced out past the filling cap.

At your milage all injectors should have looked the same. Also at your milage as you have some background on the car. Not too likely a serious issue exists. A head gasket can just rot with age though.

I am usually more sure of what posters problems might be. In your case the only solid clue so far is the oil being forced out of the engine and the appearance of the number one injector is different. I also do not think if the turbo seals where bad that the oil would be leaving the engine in the fashion it is at your milage. You could have more than one issue but I doubt it.