Symptom-first troubleshooting

Porosity Troubleshooting

Find common welding porosity causes, shielding gas checks, nozzle and diffuser checks, setup issues, and related support pages.

MIGTIGStickPlasma

Most Common Causes

  • Poor shielding gas coverage or gas flow disruption
  • Dirty base metal, wire, tungsten, or consumables
  • Damaged nozzle, diffuser, cup, o-ring, or gas path component
  • Wrong process setup for material, gas, or wire type

Beginner Explanation

What this means in plain English

Porosity is small holes or bubbles in the weld. It usually means gas, contamination, or setup is letting air or dirt into the weld puddle.

Compatible Processes to Check

MIGTIGStickPlasma

Machine and Equipment Pages to Check

XR-Pistol-Pro Push-Pull Gun Machine · Miller · CARBON-ARC · MIG

Miller · Carbon Arc / MIG · Multimatic 255 · Miller XR-Pistol-Pro Push-Pull Guns · 050116, 144862

 Miller MIGmatic M-100 / M-150 MIG Guns Parts Breakdown Machine · Miller · MIG

Miller · MIG · Multimatic 215 PRO, Multimatic 220 AC/DC · M-100 / M-150, Miller MIGmatic M-100 / M-150 MIG Guns · 000067, 000068

 Miller MDX-100 MIG Gun Parts Breakdown Machine · Miller · MIG

Miller · MIG · Millermatic 142, Millermatic 211 PRO · Miller AccuLock MDX-100 Gun Breakdown, MDX-100 · 1880272, 1880273

 Spoolmate 100 Machine · Miller · MIG

Miller · MIG · Millermatic 142, Millermatic 211 PRO · Miller Spoolmate 100 Spool Gun · 186405, 186406

 Spoolmate 150 Machine · Miller · MIG

Miller · MIG · Millermatic 142, Millermatic 211 PRO · Miller Spoolmate 150 Spool Gun · 050622, 199387

 Spoolmatic Spool Gun Machine · Miller · MIG

Miller · MIG · Millermatic 252, Millermatic 255 · Miller Spoolmatic Spool Guns · 000442, 000443

 XR-Aluma-Pro Push-Pull Gun Machine · Miller · CARBON-ARC · MIG

Miller · Carbon Arc / MIG · Multimatic 255 · Miller XR-Aluma-Pro Push-Pull Guns · 198855, 206186

 Miller MDX-250 Parts Lookup Machine · Miller · MIG

Miller · MIG · Millermatic 252, Millermatic 255 · Miller M-25 MIG Gun, Miller MDX-250 EZ Select MIG Gun · 1880275, 1880276

Related Support Pages

Miller M-10/M-15 Gun Breakdown Gun / Torch · Miller · MIG

Miller · MIG · Miller M-10/M-15 Gun Breakdown · 000067, 000068

 Miller XR-Pistol Plus Push-Pull Guns Parts Breakdown Gun / Torch · Miller · CARBON-ARC · MIG

Miller · Carbon Arc / MIG · Miller XR-Pistol Plus Push-Pull Guns · 050116, 144862

 Miller XR-Pistol Push-Pull Guns Parts Breakdown Gun / Torch · Miller · CARBON-ARC · MIG

Miller · Carbon Arc / MIG · Miller XR-Pistol Push-Pull Guns · 050116, 144862

 XR-Pistol-Pro Push-Pull Gun Machine · Miller · CARBON-ARC · MIG

Miller · Carbon Arc / MIG · Multimatic 255 · Miller XR-Pistol-Pro Push-Pull Guns · 050116, 144862

 Miller MIGmatic M-100 / M-150 MIG Guns Parts Breakdown Machine · Miller · MIG

Miller · MIG · Multimatic 215 PRO, Multimatic 220 AC/DC · M-100 / M-150, Miller MIGmatic M-100 / M-150 MIG Guns · 000067, 000068

 Miller XR-Aluma-Pro Plus Push-Pull Guns Parts Breakdown Gun / Torch · Miller · CARBON-ARC · MIG

Miller · Carbon Arc / MIG · Miller XR-Aluma-Pro Plus Push-Pull Guns · 229887, 229891

 Miller MDX-100 MIG Gun Parts Breakdown Machine · Miller · MIG

Miller · MIG · Millermatic 142, Millermatic 211 PRO · Miller AccuLock MDX-100 Gun Breakdown, MDX-100 · 1880272, 1880273

 Spoolmate 100 Machine · Miller · MIG

Miller · MIG · Millermatic 142, Millermatic 211 PRO · Miller Spoolmate 100 Spool Gun · 186405, 186406

 Spoolmate 150 Machine · Miller · MIG

Miller · MIG · Millermatic 142, Millermatic 211 PRO · Miller Spoolmate 150 Spool Gun · 050622, 199387

 Miller M-80 Gun Breakdown Parts Breakdown · Miller · MIG

Miller · MIG · 000067, 000068

Long-Tail Search Phrases Covered

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