yeah, it's not PURPOSEFULLY a
wet test
could it
be a ring, with compression of 400 and very little blowby? or you're saying whatever residual oil is in there could be sealing the piston, leading to that high of a reading and behavior?
basically, i'm looking for advice now on WHAT ORDER to start investigating. if you think it could be PRECHAMBER related, let me know, as now's a good time to inverstigate that (as the injector is out, and i've got access for a couple days to the prechamber removal tools).