Electronic – arduino UNO light LEDs right-to-left and then reversed

I have 8 LEDs lined up on a breadboard, and I am trying to make them run from one end to the other and back, sorta like the lights on KITT (from night rider – hope that clarifies). the LEDs are all set up and correct and work.

I have set up my code like so:

int ledPins[]={2,3,4,5,6,7,8,9};

void setup()
{
  for (int i =0; i <8; i++)
  {
    pinMode(ledPins[i],OUTPUT);
  }
}

void loop()
{
  for(int i =0; i<8; i++)
  {
    digitalWrite(ledPins[i],HIGH);
    delay(100);
    digitalWrite(ledPins[i],LOW);
  }

  for(int i =7; i<1; i--)
  {
    digitalWrite(ledPins[i],HIGH);
    delay(100);
    digitalWrite(ledPins[i],LOW);
  }
}

but it doesn't cycle the LEDs from right to left and then back like I was aiming for.

EDIT: What it does do – is light the LEDs from right to left, but doesn't light them the opposite way (left to right). It just keeps going from right to left, right to left

I am using an Arduino UNO, and basing my circuit off the experimentation kit for Arudino CIRC-02

EDIT #2: So I have changed the for-loops to while loops:

int ledPins[]={2,3,4,5,6,7,8,9};

void setup()
{
  for (int i =0; i <8; i++)
  {
    pinMode(ledPins[i],OUTPUT);
  }
}

void loop()
{
  int i = 0;
  while (i<7)
  {
    {
      digitalWrite(ledPins[i],HIGH);
      delay(100);
      digitalWrite(ledPins[i],LOW);
      i++;
    }
  }

  i = 7;
  while (i >0)
  {
    digitalWrite(ledPins[i],HIGH);
    delay(100);
    digitalWrite(ledPins[i],LOW);
    i--;
  }
}

and it works as intended!
However, I am still interested in where my for-loop went wrong, if anybody has any ideas