I found this in my oil pan. I have no idea what it is, and it is not much more then a CM wide, it is pretty small. Definately looks like it spins on something.
Somethng like .5 inch wide, and .25 inch thick including the pertruding middle part. Somebody guessed a cam button but i heard they dont look like that.
I can take another pic beside a ruler if it helps anyone.
ok, the timing chain was checked and she's tight. It was changed a couple years ago from original stuff. When he did it, I guess its possible it is from the original parts perhaps, dropped when removing it or something.