Ok! Im not going to lie, i was driving my car pretty hard last night. As i came to a red light, my car started bogging and making this ticking sound. When i got home I tried to figure out where the noise was coming from and im pretty sure its coming from one of my heads. What does this mean. Is there something wrong?? i started my car up this morning and took it for a spin and it sounded normal. I just want to know if i should be worried?...