i just removed my crank angle sensor from the cam today, so i can replace my timing belt.when took off i notice that somthing broke from the cam(the little tiny teenth thing that lines up with the crank angle sensor) that little peice from the cam was broken off from there. my freind say now, i will need a new cam. but before i do as my freind say, i want to no if its necessary or can i just leave it as is, and it wouldnt be a problem. please help..