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It is not possible to flush into the water outlet is not smooth, just get through, take something soft or use something slightly corrosive.
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Usually the main reason is to check the tightness of the bottom, adjust the length of the inlet valve line, and install more water; Or change a new flushing sleeve, or if it really doesn't work, change to a new toilet! Hope it helps.
After four or five years of toilet use, there is a thick alkali scale hanging inside, it is best to put some hydrochloric acid in it, teach it with a stick for a while, and flush it after two hours.
The slow drain has nothing to do with the new or old toilet, it should be that the sewer pipe is a little blocked, if the slow is serious, find the sewer to dredge the sewer and finish it.
How easy it is.
Just change it. >>>More
Open the water tank and see if the angle is wrong, stuck, adjust it.
The clogged outlet pipe is good to be through.