yes it was run on wvo, I bought a kit and ran it for a while and discovered the oil never got above 115 degrees, I have put a 16FPHE but I think it was too late, where is this ball bearing located? and how do I remove the prechamber? When I get the car fixed, I am going to get a vegtherm to go with it. I'll take a pic tomorrow, don't know how to post them, but I will figure it out, I definantly know it's coked.