Injector not drawing soap or chemicals properly

If your pressure washer isn’t drawing soap or chemicals like it should, it can make cleaning frustrating and slow. Luckily, this is a common problem that’s usually easy to fix. Follow these steps to get your injector working perfectly again.

Step 1: Check the Suction Tube and Filter

  1. Turn off the pressure washer and disconnect the chemical line.
  2. Remove the suction tube from the container.
  3. Inspect the tube and filter for debris, clogs, or hardened soap.
  4. Rinse thoroughly with clean water.
  5. Reattach the tube and ensure it’s fully submerged in the chemical solution.

Step 2: Inspect for Air Leaks

  • Examine all connections, fittings, and O-rings for cracks or gaps.
  • Tighten any loose fittings.
  • Replace any worn or damaged O-rings.
  • Make sure the suction tube is airtight to allow proper chemical draw.

Step 3: Verify Nozzle and Pressure

  • Check that you are using a low-pressure nozzle suitable for chemical injection.
  • Ensure your pressure washer is producing enough PSI for the injector to operate (refer to your pump specs).
  • If pressure is too low, adjust as needed but stay within safe operating limits.

Step 4: Inspect the Injector

  • Turn off the machine and disconnect the injector.
  • Check for wear, cracks, or buildup inside the injector.
  • Clean or replace the injector if necessary.

Step 5: Consider the Chemical

  • Some chemicals are too thick or viscous for certain injectors.
  • Dilute the solution according to manufacturer instructions.
  • Avoid using incompatible chemicals that could damage the injector.

Step 6: Prime the Injector

  • Fill the suction tube with the chemical solution.
  • Slowly pull the trigger on the wand until the solution flows smoothly.
  • Check that the spray pattern is consistent and the chemical is being drawn properly.

Conclusion:
Following these steps should restore proper chemical flow and make your cleaning jobs faster and easier. Regularly cleaning the suction tube, checking for air leaks, and maintaining your injector will prevent future issues.

✅ Pro Tip: Keep a small supply of replacement O-rings and filters on hand to avoid downtime.

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