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Why does my Coleman stove light with a large yellow flame?

Why does my Coleman stove light with a large yellow flame?

It is normal for a Coleman liquid fuel stove to burn with a large yellow flame when first started. Until the generator assembly is hot enough to vaporize the fuel, the stove will burn with a yellow flame. Once the generator heats up enough, the flame will turn to blue and settle closer to the burner. Under normal use, this can take from 60 to 360 seconds depending on the outside temperature. The colder the stove and fuel, the longer it will take. It is important to have the lighting lever on the side of the liquid fuel stove's valve in the "up" position when starting the stove and to leave the lever in the "up" position until the flame at the burner turns blue. When the lighting lever is in the "up" position on the valve, the fuel mixture fed to the generator contains less fuel and more air than when the lever is in the "down" position. Running this lean mixture when lighting the stove allows the generator to heat up enough to vaporize the fuel without building up excess fuel in the burner. If, after the flame at the burner turns blue, you turn the lighting lever to the "down" position and the flame at the burner turns yellow again, turn the lighting lever "up" for another thirty seconds. The yellow flame indicates the generator is not hot enough. On both liquid fuel and propane stoves it is a proper fuel and air mixture that produces the correct blue flame at the burner. On a liquid fuel stove, outside air and fuel from the generator are mixed at the Bunsen where the generator plugs into the manifold behind and above the burner. On the manifold, right behind where the generator plugs in, there are two holes that draw in air to mix with the fuel on the way to the burner. If either or both of these holes are blocked or if a spider or insect enters these holes and build a nest or web sac inside the manifold, the fuel and air mixture will be incorrect and there will be a large yellow flame at the burner that will not settle down to blue. On a propane stove, there is, under the cook top, a tube that runs from each burner to the valve at the front of the stove. Near the valve end of the tube are two holes that draw in air to mix with the fuel. These holes and the tube near the holes can also be clogged by a spider or insect nest or egg sac. This will cause a large yellow flame at the burner. For either stove, the solution is to run a small bottle or gun-cleaning brush or some pipe cleaners up inside the tube to dislodge the blockage and then to blow the Bunsen or tube clear.

This information comes direct from Coleman and is to be used as advice for the use only on Coleman stoves, Johns Cross Motorcaravan and Camping Centre accept no liability for the information given, We would always recommend that a Competent person only works on any Dual fuel product.

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