Timer Issue

I need a timer to wait 5 seconds after a button is clicked before displaying something else.  I am having trouble with this and I am sure its something I am doing wrong.  It seems to work but doesnt stop. 

Here is what I have so far any help would be appreciated.

function tortTimer()

          {

                    trace("Tort Timer");

                    var tortInterval:Timer = new Timer(750);

                    tortInterval.addEventListener(TimerEvent.TIMER, tortProcessing);

                    tortInterval.start();

          }

function tortProcessing (e:TimerEvent):void {

          if (rotationsPM < 20)

                    {

                              trace("Not long enough");

                              feeback_MC.visible = true;

                              tort_wrong.visible = true;

                              next_btn.visible = true;

                    } else if ( rotationsPM > 25) {

                              trace("Its overcooked");

                              feeback_MC.visible = true;

                              tort_wrong.visible = true;

                              next_btn.visible = true;

                    } else if (rotationsPM >=20 || rotationsPM <= 25) {

                              trace("Just Right");

                              feeback_MC.visible = true;

                              tort_right.visible = true;

                              next_btn.visible = true;

                              tortInterval.removeEventListener(TimerEvent.TIMER, tortProcessing);

                    }

}