Reply To: AMUKA

Those that visit a great rabbi grave site need to know what to do there.
They need to look in a prayer book and say tehilim the entire time.
They should keep in mind the soul of the great rabbi is also praying and standing next to them.
It is up to hashem of course to decide whether he will fulfill your request.
The likelihood of your prayer being answered is lot better this way then if you praying alone.
At no time should you think the soul of a great rabbi can do more for you other then pray on your behalf.