Cutting torch popping a lot
What makes my cutting torch (Victor brand) start popping rhythmically? This is during the pre-heat. The 'snaps' or pops aren't too loud, and it stops when I give the extra oxy with the cutting lever.
I keep the orifices in the cutting tip clean (and it's a pretty new tip), and I've got new O-rings where the cutting head fits into the torch handle. I've been running the reg pressure levels - with a medium-size tip - at about 8lbs acetylene, 25lbs oxy.
The torch still cuts... because once I've pre-heated a corner I just pull lever and cut away. But it's annoying during the pre-heat, and I'd like to figure out what's wrong.