Hey guys....I have a question about my engine. When I begin to accelerate there seems to be a very light rattling coming from it. Nothing big and I have only noticed it in the Mornings when I start it and at night lately when its colder. During the day when I drive, there's no noise or any other problems at all. The best way I can describe it is like shaking up loose change in a can but again its not loud. Could I have possibly spun a bearing or do you think it could be something else??