Optimus cap

Discussion in 'Stove Forum' started by 8R Pete, Jul 10, 2019.

  1. 8R Pete

    8R Pete United States Subscriber

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    This is going to sound like a dumb question but how can I tell if the extended Optimus cap that accepts the mini pump is working? I take the cap off and put the mini pump on, and when I push the plunger feel nothing. When I remove the extension inside the cap (long piece and pump) I feel air but when I screw the extension back on nothing.
     
  2. itchy

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    Can you depress the pump when it is attached to the assembled cap? I've never tried what you are doing, but it seems to me if air could not pass through the cap it would tend to pop off the end of the pump if not attached.

    I'd leave it on the stove and try it. With the stove gassed up and cold, one to three pumps should be enough to force some liquid fuel out when you open the valve.

    Or you could start the stove the "right" way and, before it warms up to much, use the pump to see it it results in a more robust flame. This is what the directions with my pump said was the correct way to use the pump -- but I think few use it this way.
     
  3. tofta

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    Pump and pump cap in water, there should be bubbles …