A friend of mine has a '92 pickup with the 22re. He was on his way home tonight and he called me and said something had happened to his truck. He said while he was driving all of a sudden his engine started rattling loudly. He knows the typical valve rattle and he said it is much louder. It dosent want to idle and when he was still rolling if he gave it any throttle the noise got louder with rpm. I told him to check the oil and he said it looked fine. So i come to the toyota guys to tell me what happened. Any help is appricated.