[Richard and Rhonda]

Leo,

Forgive my ignorance of that model coach, but can you run your generator outside of the coach? On mine, I can slide the gennie out and run it.

I too would guess something is simple as a leaking hose or more ominous such as freeze plug leaking, head gasket, or worse.

The fact that you say white smoke, meaning steam, really points to it directly coming from the engine and not a hose. If you look around the engine do you see any areas that look clean? That may be a clue where the steam is originating.

If you can't get it out to run it, I have used a simple remote technique with any digital camera that will record video. Put it in the area and turn it on. Amazing what you can see, and if you download the video to your computer, you can advance it frame by frame.