147 t spark 2003 50k miles - had the car services, replaced timing belt, balance belt last year by trusted garage - started the car this morning and a tapping/rattling noise came from the top of the engine on start up, left the car ticking over but noise still there, drove around the block all running ok but noise still there. Not sure if this has anything to do with but at the weekend had to move the car out of the garage so only had the engine running for 20 seconds, left it for a few hours then put the car back - suggestions please