So I got up this a few mornings ago and started my car from my kitchen , got ready to go out the door, and as I was walking outside I heard a bad knock/ticking , very loud coming from the engine compartment. As I went to investigate I opened the hood , and I couldn't pin point it , but it did go faster as I accelerated, After the engine warmed up it disappeared.
Next day same routine came out side and noticed the ticking again, so I called the dealer being the car was only 2 weeks old and told them I'm brining it in. The guy told me from the sounds of it , it could be a injector , or valve , or lifter , or piston slap? what do you guys think ? any experience with this? they had it all day and couldn't pin point the sound because it was to warm out for the engine to stay cold long enough to pin point it. I asked what he thought from initial sound that was short lived today and he said it was the wrong sound for piston slap. confused is this a common problem ?