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Old 07-11-2018, 07:47 PM
heinzb heinzb is offline
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Do I have a cracked block?

Over the years there have been many posts regarding the issue of having water in the oil.
I also have this problem.
I found the comments and suggestions very interesting and was hoping some would work for me.
I changed the oil several times but the problem did not go away.
I started to check areas mentioned in the forum to determine the cause. I began by doing a pressure test of the manifold and the block.
I tested the manifold first and found that it retained most of the pressure. It lost only about 10% over one hour.
Unfortunately I was not that lucky with the block.
Testing the block with the thermostat in the pressure was gone after half an hour. When I removed the thermostat the reading got a lot worse. It almost immediately lost all of the pressure. I double checked all the fittings to make sure there were no leaks.
Am I correct in presuming that I have a crack in the block?
I did not think it was the head since I changed the head gaskets last year. Perhaps I can remove the head again but how do I test the head for a crack?
Any suggestion/comments are greatly appreciated.
heinz
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