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Why do we have incomplete combustion? - Heating & Cooling

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For combustion you need the right amount of oxygen and air, so, may be, you need to open the entrance of air, the primary or secondary opening.
You can have wrong winds and pressures reversing the direction of movement of air in the chimney ?
Your chimney is full or closed ???
All is function of the details observed very carefully.

Posted on May 11, 2014


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Why does my gas fired AGA produce very sooty deposits on the outside wall with a fan assisted short flue

Soot indicates incomplete combustion. This can be dangerous because in addition to the soot, you are probably also getting carbon monoxide. Can you increase the amount of oxygen?
BBC GCSE Bitesize Combustion

Feb 16, 2017 | Heating & Cooling

1 Answer

Same senerio as earlier, with the new tbi, all new sensors, truck sits ideling black smoke!! Fumes will burn your eyes sittn in cab!!

black smoke is incomplete fuel burn in the combustion process
the burning eyes is the resultant noxious oxides that form from that incomplete combustion
causes ==
possible turbo failure (if fitted) incorrect air/fuel ratio
faulty injector tips --not atomizing properly
blocked air filter
faulty injector pump--overfueling

Sep 05, 2015 | Cars & Trucks

1 Answer

Heater is putting off black stuff. How can I fix it

black soot comes from incomlpete combustion of fuel, so look for reasons of incomplete combustion , wick up too high , fuel valve hangs open things like that

Mar 03, 2015 | Heating & Cooling

1 Answer

My Craftsman 5.5 hp 14" rear tine tiller blows black smoke and quits. Gas is clean and new and so is the oil.

black smoke means incomplete combustion of various reasons.
motor stops because no longer able to maintain enough air combustion.
shock cord is blocked.
spark plug / spark plugs not working properly

Sep 10, 2013 | Garden

1 Answer

My natural gas everdure commander 21 mj heater panels are burning blue. four burn orange but two are blue.

When the panels burn blue it is a sign of complete combustion. When they burn orange this is a sign of incomplete combustion. They need cleaned. Hope this helps. wally

Jun 14, 2011 | Heating & Cooling

1 Answer

Comes up with code 12 when turned down ( incomplete combustion )

If you're getting an error code indicating incomplete combustion, that's a good indicator, that the unit needs a thorough cleaning inside and out. It's a sign that the burners are clogged, as well as the venturi valve (the air to gas mixture valve). Keep in mind that although Vent-free gas heaters are extremely safe and 99.9% efficient, they do use interior air for combustion. So, whatever is floating in your household air (dust, lint, pet hair, etc) gets pulled into the heater when it's in operation and clogs it up. Generally, cleaning it annually (usually, in the early Fall before firing it up for the heating season) is sufficient. But, if it's in a dusty environment, twice a season would be better.

Check the Maintenance section of your Owners Manual, as it goes into detail on how to clean the heater.

Hope this helped you. Please let me know.

May 16, 2011 | Rinnai Vent Free Gas Heater/

1 Answer

Should there be soot in the flue deflector? How often should this be cleaned out and what is the best way to clean this out?

Soot is formed when the fuel combustion is incomplete. Incomplete combustion may occur if the fuel is low, air and fuel mixture is not correct, wrong size of burner orifice with respect to the fuel used ( propane or natural gas).
Soot can be removed by wiping it off with a nylon scrubbing pad dipped in grease cutting solution. Check also the fire tubes for soot or carbon build up.

Apr 10, 2011 | Pitco Frialator 35CS Deep Fryer

1 Answer

I have a wall mount natural gas furnance and there is black soot on my siding outside

If the heater has not been cleaned and serviced annually, the problem may be caused by incomplete combustion, due to the air intake mixture valve on the burner(s) being clogged. Also, low gas pressure can cause this. As you know, incomplete combustion can and will cause a build up of carbon monoxide.

With you being a firefighter, I'm sure you would want this checked by a qualified technician. Personally, as a volunteer & career EMT for the past 25 years, I would highly recommend that you have this done.

Hope this helped answer your question.

Mar 13, 2011 | Empire Heating & Cooling

2 Answers

Kenmore twin burner.. orange flames

A <i>temporary</i> orange flame from your gas stove can also occur at peak usage times. An increase in local demand can cause a decrease in pressure in the natural gas line. If all of your gas appliances are in combustion simultaneously, this may also cause a drop in pressure, especially in older houses. If the problem persists, it is likely a dirty/clogged burner or the stove needs servicing. In general, an orange flame (on a gas combustion appliance) means incomplete combustion and carbon monoxide production.

Research Design Studio

Jul 06, 2009 | Kenmore 79012 / 79014 / 79019 Gas Kitchen...

1 Answer

Incomplete fuel combustion

You may a misfire in the ignition system (Spark)

Sep 26, 2008 | 1990 Mercedes-Benz 190

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