You should replace your fill valve. They are cheap (around $10), and easy to replace. Visit your local hardware or plumbing shop. Instructions are on most packages. In the meantime, if you have a toilet full of nasty, just pour water right into the bowl, when it reaches a certain level it will flush. If it doesn't flush, you have a clog! Your flapper valve may also be the culprit, if you flush and the water just keeps running into the holding tank, the problem is the flapper! Also cheap and easy to replace. Whenever i have a problem I buy a toilet rebuild kit. They are about $20, and will work with most standard toilets. I hope this was helpful!
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You should replace your fill valve. They are cheap (around $10), and easy to replace. Visit your local hardware or plumbing shop. Instructions are on most packages. In the meantime, if you have a toilet full of nasty, just pour water right into the bowl, when it reaches a certain level it will flush. If it doesn't flush, you have a clog! Your flapper valve may also be the culprit, if you flush and the water just keeps running into the holding tank, the problem is the flapper! Also cheap and easy to replace. Whenever i have a problem I buy a toilet rebuild kit. They are about $20, and will work with most standard toilets. I hope this was helpful!