F'n EGR....but its required.

CA tests EGR operation with a vacuum pump off its feed line. strike one.
My distributor uses ported vacuum (@0) so there is no 'pull, plug and time', strike 2
(darn thing idles better with a little advance, but not allowed)
So maybe cheat by plugging the orange venturi line, is that what you meant? Hmmm....
Truck idles right at 8 BTDC, no prob there, its just a nasty idle, like a vacuum leak...EGR leak!
I need EGR as one of the test that it failed is NOx and that is high Combustion temperature (lack of cooling EGR) during the 3000 RPM loaded dyno run. Could the Amp be bad/leaking? Maybe bleeding manifold vacuum to the EGR side? Supposed I could draw a vacuum and see if she holds or bleeds out. Well, once I find my mighty-vac.......Or the tongue.