I was using my portable 110 v Century 135 MIG yesterday. The welder is about 10 years old and used infrequently (last used about 3 months ago).
The melt looked like there was no shielding gas. I upped the gas pressure on the regualtor with no improvement. I could not hear any gas flowing out of the end of the MIG gun (Tweeco brand). I unscrewed the nozzle on the MIG gun and could not hear or feel any gas flow. I shut off the valve on the bottle and pulled the trigger and the pressure on the gage dropped immediately (leading me to think that this is not a gas solinoid valve problem).
Should I be able to hear or notice gas flow at the end of the nozzle or at the gas flow orifices under the nozzle? Suggestions on where/ what to troubleshoot?