I've got a double burner furnace from fleabay, one burner works ok except for sometimes puffing, the other one don't burn as well and makes a whistling sound. The higher I turn the gas the better it works but still does it. Does altitude make a difference ? I'm at 5k feet.
Dual burners can sometimes be tricky, sometimes the turbulence from one burner can disrupt the other burner, how does the problem burner work if the other one is not lit?
It still makes the noise and puffs though not as bad. I measured the tip size, it's .041 " or 1.04 mm , I had a small crucible in it I was tempering with borax, don't know if that makes a difference. I'm new to this, really appreciate your input. Thanks, John ,,,
At higher elevations (and yes I consider 5k to be pretty high) you will need more airflow or less fuel flow to get it to run right. Play with that or make us a video.
If it's a venturi type of burner, a smaller tip might help too, a smaller tip means you get a higher velocity fuel jet for the same fuel pressure and a higher velocity jet draws in more air.
Found this video, seems like my problem, like Jason said, running rich. I have the same thing with my forge, same type burner as on furnace , but just single. Maybe altitude part of the problem. I'll try to figure out how to post video . Thanks all ,,,,,,
A lot of us are car guys, so it's easier to think of this as rich/lean. Point a small hairdryer on low at the hole and watch the difference. Bet she roars like a lion!
Is there a recommended tip size for the burner ? I've seen as small as .023, mine is about .041" / 1.04mm.