Originally Posted by ages944
my car used to tick at when the engine was running, though it wasn't only at idle. In my case, I took it to the dealer, who ended up replacing my valve lifters. However, the noise you hear could just be the direct injection. All direct injection engines 'tick' a little. However, if it bugs you, then don't hesitate to take the car into the dealership and have them make sure everything's OK.
Did you hear this ticking inside the car or only when hood is up?