Guys, I need some advice. I spent about $85 on a new rosebud for my gas torch, and after using it a while, it starts popping really badly and backburning. Of course, at the instant it pops and starts burning/whistling/etc., I shut the gas off and shut the tank valves. I'm running about 7 psi Acetylene and right around that in O2.
What's interesting is that even when I open the acetylene up far enough to burn clean (and its a huge flame), and start opening up the O2, if I do it too fast and bring the torch down to a neutral flame, it blows out. If I do it slowly, and leave a slightly carburizing flame, then it will work ok, but after using the torch for a while to heat up some metal plate, it starts popping like a M-16: "POP POP POP POP.." then it backfires.
Could it be that the reflected heat from what I'm heating up is warming up the end of the rosebud too much? Maybe my gas pressure is too low? Maybe I bought a rosebud that's defective?
I finally got tired of it and put my largest tip in the torch and used it to heat up the metal.... a lot slower, but sure seemed a lot more comfortable and safe..... when this thing starts popping, it scares the crap outa me.
Any help or advice would be most appreciated. r/ Steve Bremerton WA