Ok, so back to the Stihl 192, it's got serious problems. Last night I did a pressure test on the crankcase, it couldn't hold anything at all. I assumed it was probably the intake boot, so I sealed the intake boot right to the cylinder, as I expected that was to problem, and there was some burn damage from apparent overheating. After letting it sit and coming back to it today and re-performing the pressure test, well, it was kind of a nightmare. There is a hole in the side of the cylinder on the flywheel/stator side, and I have no idea what is supposed to go there, the part is missing as is whatever hose may have been attached to it. I looked around for some diagrams but couldn't really figure out what was supposed to be there an what parts I would need to fix it? ON top of that, the whole cylinder gasket seal is also bad, so beyond these parts I would need to totally disassemble, clean, and regasket the cylinder. It does have good compression though at 125psi, so I'm thinking it might actually be worth doing. That part (gasketing the cylinder) I can probably handle, but I have no idea what these other parts I need are?
I suppose I should probably start a new thread as this doesn't really seem like an ignition problem anymore at all on this saw, its got a whole host of other issues first, then we'll see about ignition.
These sure are a massive pain in the ass to take apart though, I'm kind of curious at this point of some far simpler top handle designs on a fairly light saw even if it doesn't have but half the power. I know some old homelites do, and I might try to get one of those I think I have running. I far less enjoy working on complicated ass hard to assemble/disassemble stuff like this 192.