Hey guys, first post here so I'm sorry if it is in the wrong place. I am trying to change the fule pump on an Opel I acquired and there is something in the drain hole stopping oil from flowing. The oil is in good shape and this should be the drain as maybe a tablespoon of oil came our when I removed the cap. There was a spring behind plug as shown and the other picture is the object in the drain. It moves when I poke at it but it seams to be held in place and not magnetic. It's a 71 GT with the original 1.9. Thanks in advance for any advice. Also yes, I plain to clean the cat hair off before reinstalling the plug.