Hot water tank problem

[Bolerpuller]

My hot water tank seems to function ok, but when the burner shuts off there's a small yellow flame that continues in the chamber where the air mixes with the propane. Does the valve need replacing? It's in a 86 bigfoot. (older Atwood tank) Thanks!

[Borrego Dave]

Welcome to FGRV, sounds like the pilot light burning, normal for heaters before DSI lighters came around.

[Bolerpuller]

The flame is in the mixing chamber. I just replaced the pilot light and it's now working fine (flame was coming out of the oxidized propane line to the pilot light) i noticed the new problem while watching to see that it was working properly.

[Radar1]

Does your burner tube have an air adjustment that can change the amount of air entering the tube? If so, perhaps moving that will help.

[Bolerpuller]

Yes. There's a collar with slits in it that moves back and forth to change the mixture. That's were the flame is hanging out. If i move it back it might choke off the flame?

[Radar1]

That very well could work, the collar adjusts how much air goes into the tube, but I normally adjust mine so that the flame when on full burner mode is a good shade of blue. If it doesn't let enough air in then you will get a more yellowish flame and soot.