I think that you have more than one problem. You have been given some good advise by several people. You need to be systematic about your diagnosis. We still don't know what your compression test results were. I'd recommend doing a cold compression test, starting with cylinder #2 first. Then do a leak down test while still cold. Then a, at running temp, compression test. Then a, at running temp, leak down test. Note all data. I'd also recommend doing another block check, you may have to do several. Intermittent head gasket failures are intermittent. You may also have a slight crack in the head. It's possible that the white discoloring that you asked about in your cylinder picture at the top of the cylinder may be cooked coolant residue staining. Regarding the crankcase pressure, it sounds like you do have an issue. Have you checked the arrestor/filter fitting on top of the breather box for restriction/plugging. The return hose below the box, going down into the block may plugged or kinked/restricted, or you might just have a bad box. I'd also recommend taking pictures of all the piston tops. You might just find that they are all looking the same. Remember that you have a CI injection system, all your injectors are spraying all the time, from cranking when starting till shut down. They aren't necessarily going to be dry when you pull them out. If you breather box is plugged, then you're probably getting some oil seepage from a lot of places, like collecting around the injector housings/wells, also around the spark plug recesses (possible valve cover gasket leakage). If the engine isn't smoking at cold start, and/or when driving, accelerating/ decelerating, and it's not using any oil, and your compression tests/ leak down tests are acceptable, then you're back to a misfire #2 when cold (head gasket?/head?/?), and oil leaks everywhere (breather box?/hose?). Just my thoughts, don't give up, or start taking it apart until you've done all your testing. Good luck!
