Arduino Issue

void setup() {
 pinMode(2, OUTPUT);
 pinMode(3, OUTPUT);
 pinMode(4, OUTPUT);
 pinMode(5, OUTPUT);
 pinMode(6, OUTPUT);
 pinMode(7, OUTPUT);
 pinMode(8, OUTPUT);
 pinMode(9, OUTPUT);
 pinMode(10, OUTPUT);
 pinMode(11, OUTPUT);
 pinMode(12, OUTPUT);
 pinMode(13, OUTPUT);
 pinMode(16, INPUT);
 Serial.begin(9600);

}

int ledDelay = 0;
int LED1 = 2;
int LED2 = 2;
int AnalogR = 0; //Analog input for a potentiometer that sets the delay



void loop() {
  ledDelay = map(analogRead(0), 0 , 1023, 1, 1000); //mapping the potentiometer input value to more manageable values
  digitalWrite(LED1, HIGH); // Sets LED1 high
  digitalWrite(LED2, HIGH); // Sets LED2 high
  Serial.println(ledDelay);
  delay(ledDelay); //delay based on potentiometer
  digitalWrite(LED1, LOW); // Turns off both LED's
  digitalWrite(LED2, LOW);
  LED1 = 1 + LED1; // Adds 1 to LED1, making it move to the next one
  LED2 = LED1 - 2; // sets the position of LED2 1 space apart from LED1
  if (LED1 >= 13){ //Resets LED1 to it's starting point once it reaches the end
  LED1 = 2;
  }
}