Quick answer

A clogged weed cartridge usually clears with heat and suction. Warm the cartridge in your hand, run the battery's preheat cycle for a few seconds, then take a slow, steady draw. If the mouthpiece still blocks, lift the oil out of the airway with a toothpick and wipe the contacts. Never blow into the cartridge and never push a needle into the oil tank.

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What you need

  • The clogged cartridge and its battery
  • A toothpick or a straightened paper clip
  • A dry cotton swab
  • A resealable plastic bag and warm tap water (optional)

Steps

  1. Unscrew the cartridge from the battery and stand it upright on a flat surface.
  2. Look into the mouthpiece and the small air holes near the base. Note any oil, lint, or debris.
  3. Roll the cartridge between your palms for one to two minutes. Body heat thins the oil enough to move.
  4. If the oil is thick, seal the cartridge in a plastic bag and hold it in warm tap water for two minutes. Dry the outside before you continue.
  5. Insert a toothpick into the mouthpiece and twist it with light pressure to lift oil out of the airway. Stop at the top of the tank.
  6. Wipe the metal threads on the cartridge and the pin inside the battery with a dry cotton swab.
  7. Screw the cartridge back on. Tighten it until it seats, no further.
  8. Press the preheat button, or hold the fire button for two seconds and release. Repeat two or three times.
  9. Take a slow draw for three to four seconds with the battery at its lowest setting, usually 2.5 to 3.2 volts.
  10. Raise the voltage one small step at a time if the vapor is still weak, and wait ten seconds between draws.

If the cartridge is still clogged

  1. Set the cartridge upright at room temperature for 15 minutes so gravity pulls oil away from the airway.
  2. Check the airflow holes on the battery. A ring of pocket lint or hardened oil will block them.
  3. Try a second battery. A weak battery produces thin vapor that reads as a clog.
  4. Draw through the cartridge with the battery removed. If air passes, the clog sits in the battery, not the cart.

What not to do

  • Do not blow into the mouthpiece. Pressure drives oil into the battery and the airway.
  • Do not microwave the cartridge, bake it, or hit it with a hair dryer on a high setting.
  • Do not push a needle or wire into the oil tank. Punctured glass and torn seals leak.
  • Do not keep firing a dry cartridge. The wick scorches and the taste turns burnt.
  • Do not shake the cartridge to move the oil. Shaking pushes oil into the center tube.

When to replace the cartridge

Retire the cartridge if oil leaks from the bottom threads, the glass is cracked, the oil has turned dark brown, or every draw tastes burnt after a full preheat. These are hardware failures, not clogs, and no amount of heat will fix them.

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Prevent the next clog

  • Store carts upright in a cool room. Oil that cools on its side settles in the airway.
  • Keep carts out of hot cars and out of direct sun.
  • Draw at low voltage. High heat thins oil fast and floods the center tube.
  • Take steady pulls instead of hard rips, and let the cart rest between sessions.
  • Cap the mouthpiece when the cart rides in a pocket or bag.