I've noticed that when I depress the clutch, there's a weird noise coming from the engine bay like there's something loose. It's sounds like metal. I really don't know how to explain it because I've never heard this before. And if I rev the engine, it makes the noise a bit louder but then stops. Like something is rattling inside the engine. I figured it could be in the engine because the clutch is not engaged. It's temporary and the engine/tranny feels good. No problems at all. It's a B series tranny BTW.

Thanks