I have another thread on a sludge issue that I have with my 3fe . Then I found out it had coolant leaking from the valve seat . I was trying to figure this all out . If the valve seat is leaking coolant doesn't that mean that the cylinder below it should be full of coolant ? I don't quite understand this motor design beside it being a simple pushrod motor ,but leaking coolant right between valve seat where it sits . I'm in the process of taking the head off as of what they mention in the thread I made about sludge . I hope that nobody goes through this problem ...removing the head for a tiny crack that seems to be unexplainable . I'm posting a picture below please view for any answer to my delima.