Miller 22 A wire feeder not working well

[bayweld]

This wire feeder worked well for a few years but now it is giving trouble...Hooked to a syncrowave 250 and running .035 wire and co2 gas....12 ft Tweco gun (new).
Has feeding problems even with the gun lead stretched out..Has one grooved roller and one v roller...feeds well if not welding but as soon as you weld it sticks in the tip or sputters...I put an old linde wire feeder on the syncrowave and it works well...My LN 25 works on the syncrowave as well...so I can't see it as a power supply problem...The problem was there before I put the new gun on, so I don't suspect the gun....Any ideas???

[cruizer]

Bullsh-t, a synch doesn't have the pins for any 115 vac or 24 vac to run your Linde or 22a off its Remote amphenol. Try again....

[SundownIII]

I'm with Cruizer,

BS on the 22A running on a Sync 250.

BS on the LN 25 running on a Sync 250. (know the LN 25 is VS, but it still performs poorly with a CC machine)

[bayweld]

Geezus...ease up ..I made a mistake ..Shopmaster power supply...WTF is it with you guys??

[MMW]

Check both ends for burrs. Blow it out with air. Try a new tip? If your running solid wire you should use (2) v-groove rollers. If your running dual shield or flux core you run (2) knurled rollers. Clean all your connections. Make sure drive is lined up with rollers & lined up with gun. Check wire spool tension. Try a different roll of wire. Check machine settings.

Just throwing out some suggestions.

[bayweld]

MMW...Thanks for your post..You are correct in thinking that it could be a mechanical, or cleanliness issue...I have run the feeder with both rollers v groove as well as with one knurled....and the roller alignment checks OK..Changed tips several times, no help..tried a different brand roll of wire, New gun and lead, changed grounds, checked the liner etc..No joy....I am wondering about an electrical issue now...I am unfamiliar with the start-run circuitry on the feeder board ...Anyone have any insight as to the electrical operation? Is there a timing circuit that energizes the weld voltage at the correct time as in before or after the wire starts to feed?

[cruizer]

Nope, thats a basic feeder, if the rolls turn the feeder is good.

Your slipping, can you spool / curl the wire in the palm of your hand without it slipping?

[bayweld]

Nope, thats a basic feeder, if the rolls turn the feeder is good.

Your slipping, can you spool / curl the wire in the palm of your hand without it slipping?

Yes...The rolls feed/grip good, I can't stop the wire with my hand.

[cruizer]

Well, there is zero reasons for the unit to burn back to the tip then feeder wise. Gas issue perhaps

or likely since your using a knurled drive roller, you may have it toooo tight. Quishing the wire and as the wire heats up, its hitting the tip.