Fired up my 8R first time (question)

Discussion in 'Stove Forum' started by swedmiro, Mar 9, 2017.

  1. swedmiro

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    But i didn't have my camera with me. Anyway. I had some small problems. I primed for a long time and then fired up. When everything settled down the flame looked like i had stuck a minute candle in the burner. A beautiful, yellow single flame liked the top spreader, calmly as if it was being lit on a graveyard in remembrance of a fallen friend. Jet replacement perhaps?

    "Edit" apparently I can't change the header :)
     
    Last edited: Mar 9, 2017
  2. threedots

    threedots New Zealand Subscriber

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    Sounds like a blockage(more likely) or a loss of pressure through leaking seals.
    If it is a blockage, you may have to replace the wick inside the tank as it could be scorched(from running dry - until there is no fuel left) or have some substance(contaminated fuel) in it that has caused the blockage.
    If the fuel cap seals are hardened they tend to leak and the pressure is there but insufficient to keep the burner hot enough to keep a blue flame.
    Are you using white gas(Coleman Fuel)?
    Cheers, John
     
  3. swedmiro

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    Well...no...i used 4-stroke alkylat gazoline. The kind you use for small engines that are stored for a long time or if you just want to spare the environment some. I guess i could try some white gas (which in sweden is called lacknafta and usually used as thinner)

    It was actually quite a beautiful calm and steady candle flame.
     
  4. cmb56 Sweden

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    @swedmiro
    Lacknafta in Sweden is not like White Spirit elsewhere.
    It is more or less kerosene.
    You can not vaporize this fuel in the burner due to the wick.
    If you try, it will take some time to clean the wick before the wrong fuel is gone from the wick and your stove is working again.
    Alkylat Gasoline (Aspen or any other make) is more or less identical with Industrial Gasoline (chemical clean gasoline) that work very well in gasoline stoves.
    Coleman fuel is not necessary.

    Michael
     
  5. swedmiro

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    @cmb56

    hmm....that could be the problem. The last owner might have tried kerosene.

    Ill just fire it up again and let it burn until i get some alkylat up in the burner.

    too bad lacknafta wont work. I like the price point.
     
  6. cmb56 Sweden

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    @swedmiro

    Alkylat gasoline at Biltema is 139 SEK/5 liter and Lacknafta is 100 SEK/5 liter.
    Not to much difference.

    Michael
     
  7. swedmiro

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    Just did some googling and saw that the flame point for Lacknafta is on par with Kerosene and 110C higher than the flame point for Alkylat. -50c is one hell of a low flame point :)

    "edit" i know that the flame point actually is not the temperature where it lights up
     
  8. Christer Carlsson

    Christer Carlsson Sweden Moderator SotM Winner

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    No, white gas is actually the same as clean petrol in Sweden, e.g. heptane or Coleman fuel.
    You are probably thinking about White spirit, which is the same as lacknafta here.
     
  9. tofta

    tofta Subscriber

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    @swedmiro

    A little trick is to use a pumpcap and a mini/midi pump – if you have – to get a bit more pressure in the tank.

    Last year I got a 46 with some questionable fuel in it. Drained, filled with Biltema 4-stroke, pumped and let it squirt out a bit of fuel, dried and fired. A bit hard to start but got it running and puffing and soon settled at a nice bit pulsing roar.

    All the best, e
     
    Last edited: Mar 9, 2017
  10. swedmiro

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    @tofta I don't have a pump cap. I was thinking of burning the old stuff off and let the new stuff just creep up the wick and after a while it would completely replace the old stuff. Or i could buy a mopp and rewick it :)
     
  11. monkeyboy

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    are you sure the fuel cap gasket is making a tight seal?
     
  12. itchy

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    I agree with m'boy. The candle flame suggests low pressure. Do you have another stove you can swap caps with?

    Does the control spindle seem to turn the right amount? There is a small chance that the cleaning needle is not set properly.

    Residual kerosene (or equivalent) probably will not have much effect once it is diluted with proper fuel. If you chill the stove in the freezer, tighten the cap and then let the stove warm in the sun with the valve open you should be able to force several mL of fuel through the wick and jet without running the stove.
     
  13. swedmiro

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    Warm in the sun? "looks out on the winterly landscape with 2 feet of snow" :)

    I have a cab heater i can use to warm the thing up i guess :)

    Yeah, everything seems ok but obviously isn't. I was hoping for a runner out of the mail but ill will have to go through it.
     
  14. hikerduane

    hikerduane Subscriber

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    Very easy to determine what is wrong if a pressure leak. Quickest is equalizing pressure, tighten cap and place in hot water. Even better, place entire tank and burner in a freezer for 30 minutes then dunk in hot water, watching where bubbles if any appear from. Nipple can be blocked if no leaks found. Worse case, wick is in bad shape and needs replacing.
    Duane