I have been hearing a sound fromunder the hoodthat seems to be comingfrom between the headers and the top of the engine. It is only there when I cold start my 6. After warming upthesound stops. It sounds like a continuous clicking sound. The service guys at the dealership said it may be a exhaust leak but want to charge $100 just to inspect. I would like to ask around fist to see if anyone knows more than I do about engine diagnosis so I don't spend $100.