I have posted here B4 re: sleeve installation. Anyway, after replacing sleeve seals because of collant leaking into oil, I experienced severe collant leaking into #3 combustion chamber w/ engine at rest & filled w/collant. After much testing and head scratchin, I found that the #3 sleeve has a creak ~ 2" long around the top about at the height of the lip. Now after the fact, It seams that it should have been easier to find. I used powered chalk blown into the combubtion chamber w/ compressed air to trace the leak. Any way, I had searched the forum for ideas to solve this & did not see this problem specifically. So that is why I am sending this post. Friends, it's FYI. KB

If you are saying that the sleeve its self is cracked thhere is only one fix and that is to replace it. If you asking what caused it I would say it would be a pretty good guess that water got into the sleeve and it froze. If it was rusted fast and some one tried to drive the piston down with a big hammer you could cause this as well. It would not happen under normal use.