Have a 1969 and I am chasing a vacuum issue. I assume I have a leak because I am only developing 6psi at idle and if I turn off the car before the headlights, the headlight doors will not close. Anyway, I am trying to chase the leak and I was pinching off hoses trying to isolate a change in the idle. A friend was helping and pinched the PCV hose and the change in the idle was dramatic. He thought my PCV valve was bad, but I disagree.
If you came up behind me and choked me, wouldn't I have a hard time breathing? Isn't that the same philosophy with a PCV and wouldn't you expect the idle to stumble if you pinch the hose?
I am not sure what all a PCV valve does, but venting the block is what I believe the primary function, so if you choke it, it would affect the idle, right?
Torque (tork), n: 1. The tendency of a force to rotate the body to which it is applied. 2. See also: GTO