Why Your Toilet Isn’t Flushing Clean: Common Causes Explained

In daily life, if we find that the toilet does not flush cleanly in one go, it can cause embarrassment and frustration. Why does this happen? Today, I will analyze the reasons behind this issue and provide solutions.

Why does the toilet not flush cleanly in one go？

1、Insufficient flushing power and water pressure

If the water drains slowly, you can adjust the water level in the tank to increase the water flow. Pay attention to the two plastic rods under the flush button; you can adjust their lengths using a valve to control the water amount. Turning the screw of the inlet valve clockwise can also raise the water level. Alternatively, placing a bottle in the tank can increase the water level.

2、Installation issues with the toilet flange

If the toilet flange is not installed properly, it can reduce the water flow. The distance from the tank to the tile for the pipe is usually 30~35cm, with a diameter of 110cm. When installing, ensure the toilet outlet aligns with the drain pipe, and secure the flange at the outlet while applying silicone. After installation, do not test the water immediately, as doing so can wash away the bottom cement, causing the toilet to be unstable and leak. Wait for the bottom cement to dry before use.

3、Blockage or buildup in the drain pipe

Over time, the inner walls of the toilet can accumulate scale, primarily composed of urine and water deposits, which can block the water outlet holes. If the drain pipe is blocked, you can disconnect it, use an acidic substance to dissolve the buildup, and then flush it with water to clear the obstruction. Additionally, check if there are any foreign objects blocking the path from the tank to the outlet and clear them if needed.

4、Too much gap at the connection of the flush lever and other components

If the issue lies with the connection of the flush lever, you can remove the tank lid and inspect the inside. The flush lever might have worn out over time, leading to a larger gap at its connection, which affects flushing power. You can rotate the flush lever counterclockwise to tighten it, but take care not to overtighten it, as this might press against other components and cause leaks. Furthermore, improper operation during flushing can also lead to insufficient power; typically, you should press the flush button for about 3 seconds to ensure that the flush valve opens fully for the best effect.

In summary：the above explains the reasons why a toilet may not flush cleanly in one go and how we can address these issues. I hope this information can help you. For more life skills, follow our website.