Pulled the head off my 1990 4.0
Had zero compression on 3 - a stuck exhaust valve. Others had 170+ compression but there was much water in the oil and some oil in the water.
Looks to me like there are gasket failures at number 3 and 5, with a ton of gunk in the water ports.
I dropped the head off at the rebuilders today - I think i may use a patch for the corrosion on the block, I don’t think its too bad, but what do others see? What do you think?
Here is what I found after pulling the head.
Here is the block
Here is the head