Car ran like a champ, no problems, no signs, no lights came on, got my oil changed about 1600 miles ago, on time. Its making a nocking noise, it gets louder and faster the the rpm get going. It starts the noise when the car turns on and after 2k rpm. No smoking from the engine are exhaust, no leaking, not really nocking when im just sitting in idle. It seems to be coming from the top if the head, any suggestions?