random flushing toilet

[jlanphier]

I have two older toilets and a brand new one in the basement in an older house. i have replaced the valves on the older toilets because they were constantly running. They no longer run but what i have come across is that they tend to flush all by themselves; not all the way but partially. The valves are a newer water conserving type that have a "power flush" tube that runs along the bottom of the tank to keep debris from building up. The house is a rental and the renters say that they will just flush randomly and often 8-10 times a day.
1. Is it a water pressure problem, did turn off the water a couple times while replacing the basement toilet and shutoff valve.
2. is it just a too sensitive valve and releases on its own
3. any other suggestions thanks.

 

[Terry]

Normally, that means the flappers are losing water in the tank, and the tank is refilling.
You can put a little food coloring in the tank, and see if it winds up in the bowl.