Initially I had thought I'd gotten some watery gas, car sounded louder and down on power SLIGHTLY. No engine lights or anything. Today I physically hear something bouncing around inside my passenger cam cover when idling, it sounds small. I will hopefully be taking the cover off this week, the car isn't being driven. I'm hoping it's not a lifted ring land, just wondering any first hand experience on this, if anyone has had a similar sound, perhaps a cam follower? Blown out / broken spark plug? Just getting some ideas so I won't be so surprised.
Thanks