I have a 2001 ford ranger 3.0, 6 cylinder. Before I tore it apart, I saw a small amount of steam coming out of the engine for about an hour and then it just stopped.I thought it had a blown head gasket, but when I took the head off, the gasket looked like it was fine. Is it possible that the head warped and caused the water to enter the cylinder.
I am trying to fix it myself, although I am not much of a mechanic. Is there any advice anyone can give me so I don't miss any important steps when I go to put it back together? If you replace the gaskets on one head do you have to do the other?
Any advice would be appriciated.

Thanks