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King kooker will not burn a blue flame, only a big yellow sooty

I'm using a fully charged 20lb propane tank and when lit the flame is yellow, no matter how i adjust the air or the volume of gas, I can not get a steady blue flame.

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You may need to resize the orifice, sounds to me like it is too big. If you have an adjustable orifice try tightening it down a quarter turn at a time till that flame turn pretty. Leave that shutter wide open till you start getting a blue flame. Make sure you have no cob webs blocking the orifice.Blow out and remove all rust from the burner.

Posted on Mar 06, 2009

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1 Answer

Way is my machine using to much propane


Are you smelling gas around the grill or tank? Fill a spray bottle with soapy water, slowly turn on the tank valve, and check for leaks at the tank valve, hose, regulator, as well as each gas valve (remove the knobs first). If no smell or leak is found, check your burners to see if they are burning mostly blue. If they are lazy yellow, they could be dirty or partially clogged and require cleaning; or possibly rusted through and need replaced.. If you do have blue flames, consider turning down the burners for a reduced flame and see if that helps.

Apr 30, 2015 | Grills & Smokers

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Flame does not burn blue -- it is more yellow and sooty


From what you described, the burner needs to be removed and cleaned and the air shutter adjustment needs to be readjusted. After cleaning and replacing the burner, you can light the unit and then start adjusting the air shutter, until the flames are blue with yellow or orange tips.

Hope this helped you.

Jun 30, 2011 | Camp Chef Gas Smoker

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Does not start. manual start doesnt work either.


First, is your grill on a cart or built in to an island? Secondly, are you using a 20lb propane tank to fire the grill or is it hard piped to the grill from your house? And finally, has it been converted from Propane to Natural Gas?

If you're using a 20lb LP Grill Tank are you sure there's still gas in the tank? Did you just installed a new, full tank recently and the problem started after that?

If the latter is the case, turn off the grill tank valve and disconnect the hose from the tank. Wait 5 minutes and reconnect the hose to the tank. Turn the tank valve ON VERY, VERY SLOWLY, until it's fully open. Light each burner one at a time and turn then to high flame. Do the flames look normal? Are they the proper height? Is so, you just solved your problem. Remember to turn the tank valve on very, very slowly after turning it off each time.

If you grill is hard piped from your house, be sure that the gas line shutoff valve is turned ON.

Hope this helps solve your problem.

Feb 15, 2011 | ProFire PF27G Grill

1 Answer

Why can't I get rid of the yellow flame in my gas grill? I've replaced every component - propane tank, valve, venturi tube, burner, regulator etc. Still...the flame burns yellow and creates soot.


Hi,
You have the wrong orfices in the gas manifold...they are too big and they are allowing too much gas out...if you are running LP gas and you have natural gas orfices it will do that...that is what I think your problem is...

heatman101

Aug 13, 2010 | Thermos Gas Grill 4617222

2 Answers

Have a large mobile propane grill with burner problems


Ok, here is a check list for your most common gas grill lighting problems:

1) Check your tank. Is it empty or nearly empty? The tare weight (T.W.) of your cylinder is stamped on the collar. This is the weight of your empty cylinder, usually around 18 lbs. Weigh it on your bathroom scale2_bing.gif. Propane weighs 4.25 lbs/gal. If it weighs around 20 lbs or less - Refill it. If not, go to #2.

2) Make sure you didn't turn the gas tank valve on too fast. Some gas hoses have a built-in excess flow valve that stops the flow of gas to a trickle if opened too fast. Close the tank valve and let sit for a few minutes. Or just disconnect it and reconnect it. Turn the tank valve very slowly and then try lighting it again. If it doesn't help, go to #3.

3) Is the igniter sparking? Some are battery2_bing.gif powered-check the battery or replace it. If you have a standard push button piezzo igniter or a rotary style2_bing.gif igniter, check for spark. Can you hear or see the spark? It's hard to see the spark in bright daylight. It's easier to view the spark at dusk or dawn. It should spark an "arc" at the burner. If not, adjust it if necessary. The igniter wire may have a short, causing the spark to arc somewhere else along the wire and not at the burner. Replace igniter wire. It's also possible the igniter tip where it sparks has a cracked or broken porcelain portion of the igniter, causing the spark to not arc at the tip where it's supposed to. Replace the igniter piece. If not, go to #4.

4) You may have a rusted, clogged or damaged burner or venturi tube. With a flashlight, check for spider webs, wasp nests or dirt (mud) dauber nests in the opening of the venturi tube where it connects at each gas valve orifice. Clean it out manually or blow it out with air compressor. Make sure the air adjustment opening (on the end of the burner's venturi tube) has not been changed. If it's closed too much, it will be difficult to light and cause lazy yellow flames. If it's not clogged, the burner may just be old and rusted and the burner holes are not allowing very much gas through anymore. It's also possible the burner has rusted so bad, the burner holes have been enlarged, it is falling apart or has cracks along the burner seams. If so, replace the burner(s) immediately. It is unsafe to use. Your local propane co can usually order the parts you need and some will even do the work, if you are uncomfortable doing it yourself. Bring with you the Make, Model and Serial number of the grill, so they can order the correct parts for your specific grill. Also specify whether it's natural gas2_bing.gif or propane.

5) If none of these resolve the issues you are having, it is also possible you have a faulty or defective regulator, which may mean replacement. If the pressure still seems too low and none of the above has helped, and you have a silver/gray regulator; many have an adjustment screw on the top center of the diaphragm. Remove the outer cap and turn the inside screw clockwise in 1/4 turns to increase the pressure until the desired flame size is accomplished. Flames should be as blue as possible, but will burn orange if there is food or drippings on it. Yellow flames are not good, and will soot up everything and not cook as hot as blue flames do. Yellow flames could mean you do not have the right air shutter adjustment, clogged burners, or possibly defective burners, as mentioned above in #4.

6) Also make sure you have the hose connection tightened snugly to the propane tank valve to ensure the inner valve seat is fully depressed allowing gas to exit fully without any restriction. The black plastic female fitting should be hand tightened only. Older versions that use a left-hand male brass POL valve, requires a 7/8 open end wrench or adjustable wrench to tighten.

Hope this helps! Good luck in your trouble shooting! Douglas

May 19, 2010 | Big Green Egg Extra Large - XLHD...

1 Answer

Tried to use my turkey fryer and could only get a yellow flame. Never had a problem getting that nice blue flame before. Do I have a reg problem or a burner prob??


Check your propane tank first; is it getting close to being empty? Check where the hose connects to the burner, there should be an air adjustment there; it looks like a rotating disc with two big holes on either side, this is turned when the burner is lit to adjust the amount of air mixing with the gas. If it's all the way open, you have a yellow flame, if it's closed all the way you have a blue (but weak) flame. Try adjusting that and if that doesn't work, try a different regulator...it is rare a regulator could cause this but it could cause it; just use that as your last resort.

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