How to unclog toilet jets

Updated April 17, 2017

At times a homeowner may experience the problem of a slow flushing toilet. There can be many causes for this problem, including a blocked bowl trap. However, sometimes the cause can be clogged toilet jets. These clogs occur when debris or mineral deposits accumulate in the siphon jet hole or the small orifices found under the toilet bowl rim. In such cases, to restore flushing efficiency, homeowners can unclog toilet jets with some simple household items.

Simple toilet jet clogs

Put on gloves then place a small pocket mirror underneath the toilet bowl rim to detect signs of clogged jet holes from dirt or minimal deposits of mineral.

Insert a thin wire into one of the clogged jet holes under the rim to scrape out the debris, being careful not to scratch the bowl. Repeat the procedure until all jet holes under the bowl rim are clear.

Unclog the siphon jet hole located at the bottom of the bowl using the same procedure as in Step 2.

Scrub vigorously under the rim and near the siphon jet hole, using a brush and bowl cleaner, to remove any remaining dirt or deposits.

Check the water flow from the jet holes by flushing the toilet. This should resolve simple clogged toilet jet problems.

Heavy mineral deposits

Pour a bucket of cold water in the toilet bowl to remove most of the water in the bowl.

Use the plastic cup to remove any water that still remains in the bowl and pour it into the empty bucket. Dry the bowl and rim.

Place duct tape over all the jet holes on the underside of the bowl rim and the siphon jet hole at the bottom of the bowl.

Take the tank lid off, place the funnel into the overflow tube that is located in the middle of the tank and pour in 2.25 litres (1/2 gallon) of vinegar. Allow the vinegar to remain in the channels for at least 30 minutes to dissolve or loosen the mineral deposits.

Remove the duct tape from the toilet jets and flush the toilet. Continue with the procedure outlined in Section 1, Step 2 to Step 5 to thoroughly clean all the jet holes.


You can substitute a pre-cut piece of wire coat hanger for the thin wire. For serious clogs due to build-up of mineral deposits, white vinegar may be effective. However, the process outlined in Section 2 may have to be repeated additional times. Prevent further clogs by cleaning toilet jets on a regular basis.

Things You'll Need

  • Gloves
  • Disposable pocket mirror
  • Thin wire pieces
  • Brush
  • Bowl cleaner
  • Bucket
  • Plastic cup
  • Duct tape
  • Funnel
  • 2.25 litres (1/2 gallon) of vinegar
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