What causes the micro flame? 8R

Discussion in 'Stove Forum' started by Detroithiker, Aug 14, 2018.

  1. Detroithiker United States

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    I made sure it was very hot and just put in a new wick of correct thickness, mop head strands with one strand removed.
    And all I can get is the tiniest of flames, ever turned up all the way.
    Just can figure it out. 20180813_201246.jpg
     
  2. Mark Layman

    Mark Layman Subscriber

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    Nice close shot. Is that stem cracked? Or, wick too tight. Cleaning needle not adjusted properly.
     
    Last edited: Aug 14, 2018
  3. Metropolitantrout

    Metropolitantrout Subscriber

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    Did you let the wick soak for 10 mins+?

    Is there pressure in the tank when you shut it down?

    Next, try:

    1) removing the jet
    2) Remove the needle (rotate your spindle clockwise as far as possible and bringing it to the top to do so).
    3) Try running the stove without the needle
    4)If the stove runs well try resetting the needle
    4b) Stick the needle in a pencil eraser
    4c) Re-insert the needle by pushing down (with the notches aligned) and rotating your spindle counter clockwise and listen for 5 clicks. This should properly seat it.
    4d)reinstall jet
    Jerry
     
    Last edited: Aug 14, 2018
  4. snwcmpr

    snwcmpr Subscriber

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    All of the above.

    Go back to basics.
    Did it work before?
    What did you change?

    Did you preheat?
    Is the filler cap seal good?
    Does it leak air anywhere?
    Did you do a dunk test?

    What does this mean?
    It does not have to be hot to put the wick in.
    I wondered too. It does look like a scratch though.

    Was the wick hard to put in? Too hard/tight and the fuel cannot flow.
     
  5. Majicwrench

    Majicwrench Subscriber

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    Is this the one I just saw?? If it has a cleaning needle, open and close valve several times to clean jet. If it doesn't have a cleaning needle, do it manually.
     
  6. dogface

    dogface United States Subscriber

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    Fuel, pressure, flame .......... try everything Metropolitantrout suggested, and unless there is a plug of crud somewhere, it should work.

    If you try all of that, and you still have but a small flame, when everybody else has a big flame, well, hmmm, I hate to have to tell you but it may be a case of simple inadequacy, a sort of stovie impotence, tragic but rare. Only buying more stoves, and fearlessly fettling them to gain experience, is the only known cure.

    By the way, the mat that the burner is on, did you make that? I like things like that.
     
  7. Detroithiker United States

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    Yes it's the one you broke free for me.
    The needle is broke off but I took it out so it should not be a factor.
     
  8. Detroithiker United States

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    .
    No I bumped it with the wire I was using to clean the jet, it just has a lot of soot from heating it up with fuel when I ran out of denatured alcohol and a small amount rubbed off from the wire
     
  9. Detroithiker United States

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    I may be better of buying another one here, this is at least my 3rd post trying to get this POS running.
    I have followed so many instructions to do it right and I have a lot of experience with coleman stoves and lanterns so it's not like I have zero experience.
    There may be something wrong I cant see.
    It's frustrating
     
  10. Jim Lukowski United States

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    How hard was it to install the wick? If it was difficult, maybe it's struggling to get fuel to the jet.

    Admittedly, Ive only done one, and that was on my Svea 123. In my case, I used gauze because I read here that it could be used and it works like a charm. I had it a bit snug going into the burner, but not too tight or forced in any way.
     
  11. Majicwrench

    Majicwrench Subscriber

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    First off, prick the jet again!!

    Then, with font reasonable full of CF, open valve and hold font in hands for minute, that should create enough heat/pressure to move CF thru jet and into priming cup, does it?
     
  12. cmb56

    cmb56 Sweden Subscriber

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    Have you checked the wick after your tries to light the stove?

    Did you make sure that the mop strands was 100% cotton?

    If they where syntetic they might have melted to be some type of plug in the feeding tube.

    Michael
     
  13. snwcmpr

    snwcmpr Subscriber

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    One of the things I like about old Coleman stuff is how easy they are to work on.
    Patience is necessary here, grasshopper.

    The 8R is really a simple stove, there are not many things to go wrong.

    Did it work before?
    What did you change?
     
  14. Detroithiker United States

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    The wick went in with some twist and a small amount of pressure.
    I would say is loose enough to allow fuel flow.
    I got the wick from Majicwrench and removed one strand as everyone suggests
    Barely, it would only produce a weak yellow flame, this why I had majicwrench break it free for me, giving me access to the wick which I believe was too tight.
    I tried preheating with both naphtha and denatured but could not get it to burn, just that little candle flame.
     

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  15. snwcmpr

    snwcmpr Subscriber

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    You may have to leave the Coleman guy aside. He will not be much good here. Coleman stuff is easy, usually. :)

    Ok, so it is fuel flow or pressure, as said above. Fuel, pressure, flame.

    Flow .. There is something blocking the fuel between the tank and the jet.
    I would empty, clean, remove jet and wick and blow air through to check for blockage.
    Or poke a pipe cleaner or wire in there.
    Unless you can think of a better way to check that.

    Pressure ... you are not getting any pressure from the preheat. A leak somewhere. Dunk test again. Empty of fuel. You could even try with/without the jet to test if it is the jet.

    Is the broken piece of the needle in there?

    Asked above.
    Did you let the wick soak fuel? A new wick is dry.

    I like the Optimus 8s better.
     
  16. Trojandog

    Trojandog United Kingdom Subscriber

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    1. Do a dunk test to see if the filler cap seal is leaking.

    2. Strip the stove down until you just have the burner stem. Clean out the three holes with a small watchmakers type screwdriver - wick hole, spindle hole, nipple hole.
     
  17. Majicwrench

    Majicwrench Subscriber

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    When I had the tank here at the shop, I pressurized it to 15PSI and dunked it, it is air tight.
     
  18. Detroithiker United States

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    Well thank you man, this helps a lot.
    I'm gonna have to blame the wick or jet then.
     
  19. Detroithiker United States

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    I brought a 123 back to life with jet, wick and fuel cap all in need of attention and now it runs great.
    This one is gonna teach me a lot more if I get it right.
     
  20. Majicwrench

    Majicwrench Subscriber

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    Have you pricked the jet?? Do it again..does it piss fuel out of jet when you warm font with your hands?