This week while working on a tractor that was getting coolant into the number 1 cylinder, I had discover that there was a gap between the cylinder liner and the block. The cylinder liner is supposes to be a .004" interferance fit and there was a .003" gap in a couple spots. Its my suspicion that the block is cracked around the liner and allowing coolant up through the liner. I came to this conclusion because the cylinder head has no cracks and passed a pressure test so that means it has to be in the bottom end. The deck on the block is within specs for being level.
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