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Trailblazer welding erratically

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  • Trailblazer welding erratically

    My Trailblazer 302 is welding very erratically. It will weld fine then suddenly pulse to a higher amperage which blows the puddle apart. Very frustrating. Any ideas?

  • #2
    I usually start by cleaning the slip rings for any erratic issues on an engine welder.

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    • #3
      I had the tech change the brushes. Nothing changed. Is that the same thing as the slip rings? I really wish he’d have tested it after he changed them. I’m sure he’d have noticed something wrong still.

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