imazdaman
Member
1989 LN9000 with Cat 3306 eng. It will not stay primed. I believe it to be pressure regulator cause the more I pump the primer, the more I can here it just flowing back in the fuel tank. Problem is, I'm not sure where the pressure reg is and I do't have a diagram. I figured it was at the end of the pump close to return line. But when I removed it, it was just a plug. Any idea's.