Hi amigos ,

Ldub,
Thank you for the information, unfortunately my manifold does not have this hole.

VXteme,
I see a small brass tube on the intake manifold, it's on the drivers side under the throttle assembly.. Is this the one? The tube has a rubber tube, but since it is so difficult to get there I need to take some time and see where the end of this tube goes to.
Thank you.