I have this rattling sound coming from the timing chain cover, as best I can tell. Not a ticking from the lifters, nor rod knocking. Good oil pressure. Ran with the drive belt removed to eliminate the alt, W/P and PS pumps. While running and no belt, I don't feel anything with my hand on the timing cover, so thinking it is inside.
I replaced the timing chain and gears a couple weeks ago, thinking wear/stretch was allowing the chain to hit the cover. No rub/wear marks on the inside of cover. The tensioner and chain guide looked fine and worked, so I didn't replace them. The plastic wear pads did have small grooves from the chain, but not enough in my mind to need replaced. The tension worked fine.
Thanks in advance.