Just had the Timing Belt replaced by the Hyundai dealer. Car is a 2002 Auto V6 Sonata. Whilst everthing seems to work there is a definite constant "rattle" which appears to come from both cylinder heads at the Timing Belt end. ie around the gear which the belt drives at end of camshafts. Unfortunately cant be more descriptive other than it certainly wasnt there before! Anyone fiddled around there and know if there is anything he/she could have left off/loose? Many thanks John