Post some pics of your welds, may help to diagnose.
Actually that helps a lot. Honestly I was starting to think I was going crazy and maybe just forgot how to weld, haha. It's good to know I'm not the only one.i know this isn't gonna help, but i went through 3 lincoln 180's w/ wire feed issues in 2 weeks. Finally, I just got a Millermatic 185, the 252 is where it is at. like wyoming said they are known to have issues...
I'll try to get some pictures next time I'm back home which should be this coming Friday most likely.Yes pictures would be a big help.
Are you getting the correct amount of gas shielding . i don`t think it would cause the burn back issue .
Check if the polarity is correct that might cause your issue.
Another thing what kind of circuit is your welder on. How is the electrical supply at your panel box . I have while on a independent breaker had problems with these 115v units .
You might also check the trigger circuit for loose connections no cuts in the gun??
Just Saturday with a new gun and new feeder miller 22A feeder i was having issues with the wire stopping because of kinking the gun just enough.
Just so you know if you take your welder in for warranty and it turns out it is user error or working to Lincoln specs you will be billed most likely an hour charge . Ask before you commit to leaving your welder. You need to write or type a good description of the problem and tape it to the unit telling what it does . Does this have any thing to do with how long the welder is being used a heat related issue often missed unless the tech is aware of this
Also I can`t remember how long the guns are under warranty .
I work for the local Warranty repair center for all the major brands of welders and plasma machines.
Good luck
what do you mean "connected to the terminal"? there is only one way to hook it up right?I haven't had any issues with the 180c and I have had it for a year. Just a thought if you haven't checked yet (which you probably have)...If you are welding solid wire w/gas, the work clamp shoud be connected to the - termial. I know you are to reverse the polarity for flux core. I don't even know if that would cause burn back or not.