Join Date: Jul 2002
Thanked 4 Times in 4 Posts
Rep Power: 15
Force 10 Cabin Heater
Mike, you''ve got the classic case of not heating the burner sufficiently to vaporize the kerosene fuel. I''m doubtful the issue is old fuel in the tank altho'' it would be good to let the fuel line from the tank to the burner dump its remaining old fuel onto a paper towel or two, wrapped around the burner, before proceeding with the following.
A couple of suggestions:
1. You may not be preheating with the right ''alcohol''. There are many different ''alcohols'' and you want denatured. My hunch is that this is your problem as e.g. the local hardware store ("Ironmonger" here in London) sells 4 types and none of them are really what I''m looking for. Try a new preheat fuel.
2. A propane torch such as was mentioned above can get the tubes under the burner sufficiently hot BUT it''s surprising how often this turns out not to be an option due to proximity of bulkhead joinerwork, cushions, etc. If you try this (to verify the burner and new fuel work as advertised), be sure you can apply the torch for a long enough time.
3. You do have the tank pressure up enough, right? (25 psi or so?)
4. You may have a newer (aka: cheaper) style burner. The ''tubes'' I''m mentioning, on the burners sold by Force 10, are four in number and run up under the burner bowl and flame spreader. Cheaper units now made in Portugal and elsewhere only have two tubes, which means that there''s less mass to preheat and less chance of the fuel actually vaporizing properly. If you have this 2-tube type burner, consider replacing it (Defender sells a replacement burner straight from Force 10).
As was mentioned, it''s not really possible to benefit from the ''pricker'' that cleans the orifice without inadvertently stopping the fuel flow and therefore putting out the fire. While I will routinely ''*****'' the burner insofar as possible without losing the flame, every once in a while I need to depresurrize the fuel tank, then fully ***** the burner, in order to get a blast-furnace, robust flame back. Frustrating but necessary.
Good luck and let us know what seemed to work for you, in the end.