What makes a toilet have a strong flush?

Is it the plumbing or a mechanism on the toilet?

My parent's toilet in their home (15 years old) hardly has any suction when you flush it... what causes this and how can we fix it?

10 Answers

  • 1 decade ago
    Favorite Answer

    Firstly, toilets do not work on suction. When the handle is pushed, the flapper opens and allows the water in the tank to flow to the bowl. If the flapper does not stay open long enough to allow most of the water to flow out, weak flush occurs. After the water leaves the tank, it enters the bowl rim and goes into the bowl through small holes placed around the perimeter of the rim. If these holes are clogged by mineral deposits, weak flush occurs. When the water level in the bowl is sufficient, it flows through the trap and out the discharge hole and into the sewer lines. If the trap or discharge hole is clogged, weak flush occurs. The last thing that can cause the flow to be disrupted is a clogged ventpipe. This pipe allows air into the drainage system (which is needed to operate correctly) and if this pipe is clogged, it restricts the airflow and "airlocks" the drain. Power flush toilets are expensive and hard to repair when not working properly. People who think they need a toilet that will flush 16 golf balls, actually need a Doctor, not a Plumber.

  • rought
    Lv 4
    3 years ago

    Strong Flush Toilet

  • delmas
    Lv 4
    3 years ago

    Strongest Flushing Toilet

  • 4 years ago

    Some older toilets are called washdown toilets, and have a smaller round or oval opening in front of the main drain opening. My understanding is that a jet of water from this orifice initiates the flush. Calcium deposits can cause the initial impulse to be weak, thus the whole flush is weak. You can scrape the calcium away with a small fine wire brush, or even with an unbent paper clip, but be careful not to scratch the enamel. You'd be surprised how much this helps

  • How do you think about the answers? You can sign in to vote the answer.
  • 1 decade ago

    Newer design toilets do a much improved job of this (don't buy the "cheapest").

    The "ultimate" potty is the Power Flushers - when the tank fills it creates (recharges) an Air-assisted pressure flush.

    An upgrade to a better height and better flushing is worth every cent.

  • Anonymous
    1 decade ago

    they need a vent pipe there is more pressure between the toilet and the sewage line you will need a plumber to do this since the pipes are ceramic so go outside of the house were the bath room is and start digging you will find a dull red pipe you need to cut into it and run a pipe from it so air can flow as the water rushes by kind of like a subway train vents work

  • 1 decade ago

    You need a power flush toilet. It all done by water and gravity.

  • 1 decade ago

    the volume of water used in each flush, 1.5 gallon is typical

    the rate at wifh that water is sent into the bowl, yhis is a common problem with old or cheap toilets

    the angle of the sewage pipes, low angles make it run slower, did they build their own house? is it a first floor or basement john?

    clogged drain pipes, tree and other plant roots can infiltrate the pipes and slow the passage of water and... stuff through the pipes

  • 1 decade ago

    My toilet is like that too I just moved in and the previous owners were really big on saving money on utilitys so they had one of those money saving toliets that uses less water. When you go to the bathroom its conctantly clogging because of the lack of suction. It would be okay for a toddler. LOL

  • 1 decade ago


Still have questions? Get your answers by asking now.