I have a 2002 Carson Funrunner go out Halloween weekend, I lite the water heather up and notice that its burning orange and more that usual black smoke and smell. is there and adjustment? I don't use the water heater that much for it to go out? Any suggestion?

Its not burning with the proper air/ fuel mixture. Blow the orofice out with compressed air and/ or shopvac.

Nothing major, its fairly common.

JS, its there an adjustment on it...like on a BBQ...twist the thingy on the gas line to get more air or less air??

I have no idea. Mine did this at G last year. I hit it with the compressor cleaned up the black soot on the side of the trailer and went for a ride...

Judd is correct mixture is not correct, to much fuel not enough air. Just blow out the bunner, spiders like to get in there
and build webs. It will restrict air flow and the flame will burn rich.
No adjustment on the regulator, it should be set from the factory

Thanks guys for the advice, I'll fire the air compressor and blew it out. Have a safe Halloween