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HELP Can't find how oil is getting into cylinder
Hello all, I've been pulling my hair out for the last couple of days about this problem and was hoping the good folks here could help.
I've just completed a rebuild on the engine for my '01 and with it still on the engine stand decided to crank it over to prime the oil systems. After cranking it long enough to fill the high pressure oil gallerys oil began to squirt out of the #7 exhaust port and mist out the glow plug hole. I shone a light into the exhaust port and was able to clearly see the oil come from around the open valve out of the cylinder. I saw no evidence that the oil was coming from the valve guide area nor from any visible crack.
What I've tried so far in my diagnosis:
1.) Swapped #7 injector with the one from cylinder #5 - oil loss stayed on #7 with no issues noted on #5.
2.) Replaced new #7 injector cup with another new cup from International - no change in the oil loss from #7.
3.) Removed high pressure oil and supply from passenger side cylinder head and cranked over engine - No more oil loss from #7.
So I'm certain that it's high pressure oil that's coming from the cylinder but have no idea where it may be coming from. Any ideas or anyone run into anything similar?
Thanks in advance,