Evon wrote:
The toilet in the guest room does a strange thing. When you flush it no
water runs into the tank. Then after about 3-5 minutes the water starts
running and the tank fills up.
SNIP

Very common problem with FluidMaster ballcocks:
Look like this?
http://www.fluidmaster.com/usa.html

If so, shut off the water.
Twist the black cap on top 1/4 turn and it will pop off.
Replace the rubber "seal" washer inside.
The part is readily available.

Jim