Atmega don't perform the interrupt

Using Arduino Programming Questions
4

I changed the interrupt configuration but saw no changes...

#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdio.h>
int i=0;
int k=0;
int j=0;

void ataque() {
	i++;
	if (i>3) {
	digitalWrite(13,HIGH);
        delay(100);
        digitalWrite(13,LOW);
	TCCR1B = 0x8;	
	i=0;
	}	
}
void ataque1() {
	k++;
	if (k>3) {
	digitalWrite(13,HIGH);
        delayMicroseconds(100);
	digitalWrite(13,LOW);
	TCCR3B = 0x8;
	k=0;	
	}	
}
void ataque2() {
	j++;
	if (j>3) {
	digitalWrite(13,HIGH);
        delay(100);
	digitalWrite(13,LOW);
	TCCR4B = 0x8;	
	j=0;
	}	
}

void conversao() {
        OCR1A = analogRead(A0);
        OCR3A = OCR1A;
        OCR4A = OCR1A;
	TCCR1B = 0x9; // inicia o timer da fase A
}

void ligatimer()
{
	conversao(); // busca o sinal de controle
}

void ligatimer1()
{
	TCCR3B = 0x9; // inicia o timer da fase B
}

void ligatimer2()
{
	TCCR4B = 0x9; // inicia o timer da fase C
}

ISR(TIMER1_COMPA_vect) {
	ataque();
}
ISR(TIMER3_COMPA_vect) {
	ataque1();
}
ISR(TIMER4_COMPA_vect) {
	ataque2();
}


void setup () {
  	sei(); // habilita todas as interrupções
	attachInterrupt(3,ligatimer,RISING);
	attachInterrupt(1,ligatimer1,RISING);
	attachInterrupt(2,ligatimer2,RISING);
        pinMode(13,OUTPUT);
        pinMode(12,OUTPUT);
        pinMode(11,OUTPUT); // pinos de ataque setados como saída
        digitalWrite(13,LOW);
        digitalWrite(12,LOW);
        digitalWrite(11,LOW);
	TCCR1A = 0x0; // configuracoes dos timers
	TCCR1B = 0x8;
	TCCR1C = 0x0;	
	TCCR3A = 0x0;
	TCCR3B = 0x8;
	TCCR3C = 0x0;
	TCCR4A = 0x0;
	TCCR4B = 0x8;
	TCCR4C = 0x0; 
	TIMSK1 = 0x2;
	TIMSK3 = 0x2;
	TIMSK4 = 0x2; // fim das configuracoes
}

void loop(void)
{
}

any ideas?