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HVAC, Air Conditioners, Aqua Hot, Primus, Webasto, Chassis Heaters, Furnaces and Water Heaters Questions and information about the wide variety of Heating and Air Conditioning as well as Water Heater systems available are discussed here.

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  #1  
Old 02-21-2010
ERay ERay is offline
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Default High Altitude effects on an Aqua Hot

I am presently at about 5800 ft above sea level and my aqua hot is running VERY rich... blows black smoke... it did this a little a few hundred ft above SL... has anyone experienced this... any solutions

thanks in advance for your response
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1998 Wanderlodge LX (the 1st one)
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"Heads Carolina, Tails California"
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  #2  
Old 02-21-2010
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Mike Hohnstein Mike Hohnstein is offline
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Sounds like it needs a turbo.
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  #3  
Old 02-22-2010
ERay ERay is offline
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Turbo??? I just had the motor rebuilt about 3 months ago... what part of voltage (low or high) have as an effect combined with the high altitude
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1998 Wanderlodge LX (the 1st one)
Full Timing and Loving It
"Heads Carolina, Tails California"
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  #4  
Old 02-22-2010
trendycat trendycat is offline
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Eddie & Mac,

There can be a number of reasons for black smoke from the Aquahot/Webasto. Anything that throws off the air/fuel mixture in the combustion chamber can cause black smoke. I don't really think it's an altitude problem since my unit has worked fine from sea level to 8,300 ft.

Two things that are easy to check:

1. Low voltage can cause the burner to spew black smoke. Plug into shore power or fire up your generator (if you are dry camping) and see if the problem stops. If it does, you may have a problem with low voltage from your batteries.

2. Shut the heater off and allow its exhaust to cool. Carefully inspect the heater's exhaust for damage - a bent or dented exhaust pipe can cause the burner to produce black smoke and will require replacement.

Other possible causes are more difficult to check for.

Remove the access cover on the Aquahot and check for:

1. A broken protective cap (the black/gray plastic outside of the Webasto burner)
2. Worn out grommets on the burner
3. Burner not seated properly or loose
4. Collapsed air intake sleeve on the bottom of the burner (if you have a sleeve)
5. Blocked air intake on bottom of the burner

If you know how to pull the burner:

1. Photo disc bent or tight (should be loose in order to seal the combustion chamber)
2. Damaged combustion chamber
3. Bad fuel nozzle
4. Low fuel pressure

There are some other possible causes but the burner would need to be torn down to check for those.

Bruce
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  #5  
Old 02-22-2010
ERay ERay is offline
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Thanks Bruce... great infor... I have linked the batteries and will try to run it in a bit... great input... will keep you posted

later
er
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1998 Wanderlodge LX (the 1st one)
Full Timing and Loving It
"Heads Carolina, Tails California"
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  #6  
Old 02-22-2010
ERay ERay is offline
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Just started the AH... its still smoking a bit but not like it was... I am gusessing and hoping its the nozzles... will see how it does... thanks again

er
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Full Timing and Loving It
"Heads Carolina, Tails California"
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  #7  
Old 02-22-2010
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Mike Hohnstein Mike Hohnstein is offline
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Quote:
Originally Posted by ERay View Post
Turbo??? I just had the motor rebuilt about 3 months ago... what part of voltage (low or high) have as an effect combined with the high altitude

A joke??
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  #8  
Old 02-22-2010
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Turbokitty Turbokitty is offline
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It was funny Mike!! Higher altitudes make things run rich. Try boiling water at 10,000'...
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  #9  
Old 02-22-2010
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At 5000 feet the bird appreciates a turbo,
at 10,000 feet I need a turbo
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  #10  
Old 02-22-2010
ERay ERay is offline
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MIKE... what do you mean joke... there are some of us BB owners who do not do their own work... for lack of knowlege or physical ability... so what is the joke
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