To much build up pressure in coolant system!
I popped all but one freeze plug off my block (the real freeze plug is being a pain to get out as it won't budge at all, I'd prefer to replace them all). Started to flush out the ports when I saw this passageway above #3 cylinder was waaay beyond clogged with crap. No way there was much of anything getting past that. Curiously enough that is also above where my problematic freeze plug was weeping a little coolant. On the head where that passageway met with another passageway that was the most clogged one with milky, gooey brown 'coolant'. I'll be taking a round wire brush to those to get them extra clean and continue to flush them all out. Machine shop tomorrow with the head! Oh, and I may have seen why my idle and driveability got so poor; pulling the spark plugs revealed they were in very poor shape with the amount of wet milk-chocolate brown buildup on especially #3 and #5. I could almost pull chunks off it was that bad. The head will be getting all new seals to fix that problem, providing that there's no cracks.
I popped all but one freeze plug off my block (the real freeze plug is being a pain to get out as it won't budge at all, I'd prefer to replace them all). Started to flush out the ports when I saw this passageway above #3 cylinder was waaay beyond clogged with crap. No way there was much of anything getting past that. Curiously enough that is also above where my problematic freeze plug was weeping a little coolant. On the head where that passageway met with another passageway that was the most clogged one with milky, gooey brown 'coolant'. I'll be taking a round wire brush to those to get them extra clean and continue to flush them all out. Machine shop tomorrow with the head! Oh, and I may have seen why my idle and driveability got so poor; pulling the spark plugs revealed they were in very poor shape with the amount of wet milk-chocolate brown buildup on especially #3 and #5. I could almost pull chunks off it was that bad. The head will be getting all new seals to fix that problem, providing that there's no cracks.
