[anelson86]

When I press my ignition to start up the car, there is a metallic rattling sound. It's kind of hard to describe, but it almost sounds like a piece of foil rattling or something. I haven't been able to pinpoint the location, but it only lasts for about 0.5 sec when the engine first fires up.

My best guess for the sound is the exhaust flapper for the dual pipes fluttering before it seats itself during warm up, but I'm not convinced. Been thinking about taking it in to the dealer, but wanted to check and see first if anyone has heard something similar or knows what the cause may be.