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Old 10-04-2010, 01:16 PM   #1
BlueBelle's Avatar
2007 19' Bambi
Irving , Texas
Join Date: Apr 2009
Posts: 33
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Black soot from water heater

When it gets bad, it just gets worse.

Good info in the threads on this.
It's a sign of not enough air/oxygen. Even if your supply tube doesn't look
like it's obstructed, clean it anyway. Once it starts producing soot, it accumulates in the supply tube and builds up both in the tube and in the
air slots on the adjustment.
(there are also a couple of screws that protude into the tube and they also catch soot and other stuff)

Mine was burning yellow(not enough air). I cleaned it good and now have a nice clean blue flame. The air is easy to adjust by sliding the slotted sleeve. Too much air it roars and burns erratically, too little air and flame goes yellow.

Good luck. The advice here worked for me.

Life is short. Play hard.
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Old 10-04-2010, 05:21 PM   #2
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2014 Interstate Ext. Coach
Hays County , Texas
Join Date: Jun 2002
Posts: 6,023
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Also, look for spider webs in the burner tube. That has been my most frequent problem here in Texas.

John W. Irwin
2014.5 Touring Coach, "Sabre-Dog IV"
WBCCI #9632
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Old 10-04-2010, 05:56 PM   #3
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1962 22' Flying Cloud
Bend , Oregon
Join Date: Dec 2008
Posts: 370
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My brand new heater produces black soot no matter where I adjust it! I give up!
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Old 10-04-2010, 06:11 PM   #4
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2009 23' FB Flying Cloud
The Woodlands , Texas
Join Date: Jun 2010
Posts: 131
Check hard for hornets nest and/or mud daubers. We had a wasp nest fairly deep in that was causing black soot on the side of the camper where it vents. Removed nest and soot problem vanished.

Good luck.
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carbon, soot, water heater

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