ARC - Repair & Troubleshooting
Airbrush Resource Center
Repair & Troubleshooting
Quick Checks Before You Start
Paint thickness, air pressure, compressor output, and loose parts can all affect spray performance. Rule these out before assuming a part needs to be replaced.
Check the Paint
- Make sure the paint is not too thick or too thin.
- Strain or reduce paint if needed.
- Look for dried paint buildup in the cup, jar, nozzle, or needle area.
Check the Air Supply
- Confirm the compressor is running properly.
- Check that pressure is high enough for the material being sprayed.
- Inspect hose connections and fittings for leaks or looseness.
Check the Airbrush
- Make sure the nozzle cap and air cap are secure.
- Inspect the needle for dried paint, damage, or bending.
- Check that the needle chucking nut is tight.
Check for Clogs or Damage
- Look for clogged or cracked nozzles.
- Inspect the needle tip closely.
- Clean before assuming a part must be replaced.
Troubleshooting Guide
Not Spraying
Possible causes:
- Nozzle is clogged
- Nozzle cap or air cap is loose
- Loose needle chucking nut
- Damaged nozzle
- Low air pressure
What to do: Clean the nozzle, tighten loose parts, confirm the needle is locked in place, inspect the nozzle for damage, and increase air pressure if needed.
Grainy or Textured Spray
Possible causes:
- Dirty airbrush
- Low air pressure
- Paint is too thick
What to do: Clean the airbrush thoroughly, increase pressure, and reduce paint to the correct consistency.
Skipping
Possible causes:
- Dirty airbrush
- Paint is too thick
- Air pressure is too low
What to do: Clean the fluid path, thin the paint, and raise air pressure.
Spattering
Possible causes:
- Dirty airbrush
- Paint is too thick
- Air pressure is too low
- Dried paint on the end of the needle
What to do: Clean the airbrush, especially the needle tip, adjust paint consistency, and confirm air pressure.
Bubbling Fluid in Cup or Jar
Possible causes:
- Clogged nozzle
- Damaged or cracked nozzle
- Nozzle or air cap is loose
What to do: Clean the nozzle, inspect it for cracks, and retighten the front-end components.
Sticky Trigger
Possible cause:
- Trigger and air valve packing need cleaning and lubrication
What to do: Clean the trigger assembly and apply appropriate airbrush lubricant where needed.
Double Lines
Possible causes:
- Bent needle
- Dirty airbrush
What to do: Inspect the needle tip closely and clean the airbrush. Replace or straighten the needle if necessary.
Spidering
Possible causes:
- Airbrush too close to the surface with too much paint flowing
- Paint is too thin
What to do: Pull back slightly from the surface, reduce paint flow, and thicken the paint if needed.
Paper Bucking
Possible cause:
- Applying too much paint in one area
What to do: Use lighter passes and allow time for paint to dry between coats.
Spitting
Possible causes:
- Nozzle is clogged
- Dried paint on needle
What to do: Clean the nozzle and wipe the needle tip frequently during spraying.
Pulsating
Possible causes:
- Air pressure too low
- Compressor not powerful enough
What to do: Increase pressure and verify that the compressor can support the airbrush and material being used.
Repair Guides
Straightening a Bent Needle
If the airbrush is spraying at an angle, the needle may be bent.
- Use the edge of a coin to gently lift or unsnag the bent tip.
- Place the needle on a hard, flat surface.
- Use the flat side of the coin to roll and press the bend out.
- Rotate the needle as you work so you can find and straighten the bent area.
- Repeat until the needle appears straight. A magnifying glass helps.
Removing a Broken Fluid Nozzle
The fluid nozzle is the most delicate airbrush part and can break during cleaning or use.
Use this section as the intro area and add your preferred removal steps, images, or embedded video below when ready.
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