Kadence

A week ago i took apart the entire upper intake on my 94 cobra from the intake spacer on up, including the fuel rails and iinjectors and spark plugs. I also removed the driver side valve cover. When i put everything back together it makes a loud sound, its hard to describe, its not a rattling or ticking. Its continious but the car runs perfectly fine. Could it be the gaskets on the intake spacer or valve cover. Any help would be appreciated