[surfsup]

I believe the Manifold vacuum is between 16- 22. I can take an actual reading tomorrow and post the number. If your talking about the pvc valve, it’s connected directly to the carb, and pulls a strong vacuum at idle, if I pull the pvc out of the valve cover, you can see the valve open and hear the suction, if I put my finger over the bottom valve completely, it will suck my finger in, and the motor will idle down a few rpms and still idle smooth. I don’t believe the fuel pump is leaking, I don’t see any wet areas, or smell gas.