Where's the noise coming from?
I'd check the entire length of the exhaust system. Sometimes just starting is enough to make it rub or rattle against something. (maybe)
Each man must for himself alone decide what is right and what is wrong, which course is patriotic and which isn't. You cannot shirk this and be a man. To decide against your conviction is to be an unqualified and excusable traitor, both to yourself and to your country, let men label you as they may.
The impersonal hand of government can never replace the helping hand of a neighbor. -Hubert H. Humphrey