Radiator water spilling to reservoir

[box_type]

Car is Toyota Corolla 1990 16V 4AF, i've already (or so I thought) solved the leak in the hoses, but my problem now is that when the temperature gets to normal, water starts to spill out of the radiator water reservoir not into the reservoir...

that's why everytime i check the water in the radiator i always add about 1-1&1/2 cup of water everyday before i start the engine. What could be the problem? i've looked everywhere for leaks and i found none...

[supadude]

try to replace or borrow radiator cap.

[jvnj]

Could be a dirty or clogged radiator.