Both of my old perkins diesels have a little disc on the front of their fuel pumps that serves some unknown purpose.... maybe a buffer? On the one engine it has failed and leakes bad but I can't replace it as I have no idea what it even is or what it does.
If no one has a clue what I'm talking about I'll get a picture...
If no one has a clue what I'm talking about I'll get a picture...