I have had very little luck cleaning dirty Prestolite torch tips, or
replacing the screen filter in the tip itself.
I’ve tried to ultrasonic the tips, blow them out with steam pressure,
as well as changing out the little filter (available at welding
supply stores, but with no real improvement. Acetylene is a pretty
dirty gas. I too, would love to hear about an effective way to clean
out dirty Prestolite tips, short of buying new ones (they cost about