[pjmoreland]

In case anyone is interested in seeing how the 14020691 vacuum delay valve works in the video I posted above, I cut mine open. The little orange rubber circle is a check valve that allows pressure to flow freely toward the vacuum switch to turn it off quickly when the accelerator pedal is pushed down. The smaller silver circle is a restricted passageway that allows vacuum to build slowly on the vacuum switch.

The reason this vacuum delay valve was not working was because there was a little bit of gunk under the orange check valve. A few sprays of carb cleaner probably would have fixed it. Oh, well.