There are several possible causes of a weak toilet flush: -A clogged or partially clogged toilet trap can restrict the flow of water and reduce flushing power. -If the water level in the toilet tank is too low, it can limit the amount of water available for flushing. -A damaged valve can cause a weak or incomplete flush. -The flapper, fill valve, or tank lever can wear out and affect the flushing power. -Mineral buildup can occur in the toilet bowl, trap, or rim holes, restricting water flow. We can perform a thorough inspection to identify the root cause of the problem and recommend the appropriate solution, which may involve cleaning the toilet components, repairing or replacing damaged parts, or adjusting the water level or flush valve.