My last 2 brew days I have had a reduced amount of boiloff in the kettle. Yesterday, I saw the same problem and tried to investigate carefully in the middle of the boil. I have a bayou classic burner like this
http://www.amazon.com/Bayou-Classic-Single-Burner-Patio/dp/B0009JXYQ4/ref=sr_1_2?s=lawn-garden&ie=UTF8&qid=1457379522&sr=1-2&keywords=bayou+classic It was a coolish day, so the first thing I did was to place my propane tank into a tub of water, as I have heard some say the tank can start to freeze up, which I was hoping would get it going better. that did not solve the problem. I then started playing around with my air mix valve, and saw no change in my flame. Next onto my regulator. Think this is the problem, from just on until fully open, the setting on the regulator seemed to have no affect on flame height, color, or intensity.
Taking all this into account, do I have a bad regulator, what can I do to remedy, or is it possibly a dirty burner? the burner had a nice solid blue flame as usual, but playing with the regulator just never made the flame start jumping off the burner, or any real change.
Anyone have any thoughts on a solution or better trouble shooting now that I dont have 8 gallons of boiling wort sitting on top of the burner?