If your toilet tank is full and SP. come on this should not have the effect of flushing toilet. Check out your Toilet tank by the following.
Is the 1/4 tube in the 1″ overflow pipe.
Is the tank full at the mark.
Is the flapper ok, put colored egg dye in tank and see if it leaks through in bowl, if so put in new flapper.
Are holes in the flushing rim cleaned out, take a coat hanger and bend so it so you can clean them out.
Isa the pipe stopped up from toilet.
Take a 5Gal. bucket of water and dump it into bowl and see if it goes down.
Let me know the results.null
Art retired plbg