Movement in cycles?

If I use this code in two obstacles, one with the delay and without it, the delayed one seems to teleport so it has the same value on the x-axis with the other one. Any idea why this happens?

 #pragma strict
  var speed = 5f;
  var delay = 1f;
  var pos1 = 1;
  var pos2 = 4.9;
 
 function Start () {
                 Invoke ("Move", delay);
 }
 function Move (){
     transform.position = new Vector3(pos1 + Mathf.PingPong(Time.time * speed, pos2), transform.position.y, transform.position.z);
             Invoke ("Move", 0);
 
 }