If its water, then it pretty much has to be a bad exhaust manifold.

Thank you guys again for the help. I really appreciate it.

So if it is water, its most likely the exhaust manifold. If its coolant, then its most likely a head gasket? Is that correct?

I'm trying to figure out how to determine if its water or coolant in there short of having it hydro lock again. I already go the water out of the cylinders since the last time it happened. Any ideas?

Have you had to refill the coolant?????

I have to top off the coolant once or MAYBE twice a year. Not so often that I have given it much of a thought.

Do you guys think that one cause is more likely than the other? It seems like I should start with the exhaust manifold because that should be easier to remove. Thoughts?