Toilet Tank Not Filling Up After Flush Why Won't My Toilet Fill Up With Water?

A common problem our customers face involves the toilet tank not filling up with water. Our plumbing company will explain some reasons why this happens, and why it might be happening to you, as well as offering possible solutions to help you resolve this pesky problem.

Benjamin Franklin Plumbing Bay Area is always here to help you address the plumbing issues plaguing your home, so, feel free to contact us for a routine inspection of your home’s plumbing and plumbing fixtures.

Here are some reasons why you may be faced with a troubling no-fill toilet tank.

Fixing Toilet Tank

1. How To Stop a Running Toilet With a Ball Float

The float ball is the most common culprit of this problem. The float ball sits above the water that is supposed to be in your tank. When the water in the tank reaches the optimal height, the float ball stops the inflow of water by moving the float arm to block the entry of water.

  • The float ball being too low is causing the lack of water entering your toilet tank.

To fix this issue, you need to give the float arm a slight bend upward, so that the ball goes higher and stops the entry of water later. You may need to replace the float ball completely if this does not solve your toilet problem.

2. Adjusting The Fill Valve

If the toilet is not filling properly from readjusting the float ball, then the next solution will be to try and readjust the fill valves.

Toilet fill valves control the flow of water from the supply line and fill the tank between flushes. If the toilet’s fill valves use float arms, then the fix is to start by removing the toilet cap lid and locate the fill valve in the tank, it should be on the left side.

Place a flat-head screwdriver into the adjustment screw, and turn it clockwise to raise the fill valve which will allow more water to fill in, or lower the fill valve by turning the screw counter-clockwise if your tank needs less water. Flush the toilet after these adjustments and see if the water fills properly after doing so.

If your tank is using adjusted cylinders, then try to remove the toilet lid and find the fill valve which is located on the left side of the tank. Pinch the floating clip on the side of the float valve and slide it up to let in more water, or slide it down to let in less water.

3. Toilet Not Filling Properly Could Be Due To A Bad Trip Assembly

Your trip assembly is the part of the flush handle that is connected to the tank. This assembly could be positioned incorrectly, or it could be blocking itself when the lid is on, which will result in the flush cycle not being completed correctly. Open the lid and inspect the trip assembly, if you notice that the trip assembly is bent, broken or worn out, then get a replacement trip assembly to fix your fill problem.

4. Low Water Pressure

If low water pressure is the reason toilet tank not filling correctly, then it may not be an issue with your toilet. This issue could be caused by old rusted pipes or even leaking pipes that prevent a high enough flow of water from reaching your toilet. If your home is an older property and you suspect you might have bad piping, it may be causing other irregularities in your other plumbing fixtures and not just your toilet.

Call a Benjamin Franklin Plumber to inspect your home’s plumbing; we will figure out the real issue to your problem and solve it promptly.

If you have any further questions, do not hesitate to call us at (415) 642-4164, and someone from our friendly staff will be there to assist you.