ive spent 8 hours today trying to figure out why the robot cant maintain a steady weld. the robot will start welding just fine then it sputters and leaves a gap in the weld or the weld puddle is all over the place then starts welding again. ive checked and tested connection. checked the wire feeder changed the wire. changed the tip/diffuser. ive went into setup and checked weld proc etc. tested 1000 different weld sch that worked yesterday. im out of ideas. any suggestions would be greatly appreciated.
power source is a Lincoln electric 455M power wave