Hi

Wondered if anyone can help. My Ford has approx 75000 on the clock. 2003 model. 1.4 engine. Last service August 2016.

Lately I've noticed particularly when I turn engine on that is makes a loud like raspy rattling side when idling. If I rev the engine you can hear it more.

Not sure if it's the exhaust as it doesn't seem to be particularly loud when driving. I do have videos of the noise but can't post on here....any ideas? Thanks