Toss your torch tips in the ultrasonic cleaner and let it clean for
a few hours. You may have to change the ultrasonic solution a few
times forthe water will be black the first time. Acetylene, being a
sooty gas, tends to build up inside the torch tips and they get
clogged. The really small ones and large ones are prone to clogging
If you don’t have an ultrasonic cleaner, soak the torch tips in a
jar full of acetone. You’ll be surprised at how much black gunk is
on the bottom after tips soak overnight.
Works every time. I do that every so often.