1990 tracker isc solenoid test?

[rjm]

here are pics from "my pics" i don't understand how to get pics into "my gallery" its not working for me. Notice the 1 gasket that goes between the top and base of the TB seems to be missing a hole - please advise if I should add this hole. (seems obvious I should) may help someone else in the future to know.
I would still like my original question addressed. "Which of the 3 holes in the isc should /should not allow air to pass through with NO power to noid. 
https://fixkick.com/forum/ezgallery.php?...iew&id=500
https://fixkick.com/forum/ezgallery.php?...iew&id=499
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https://fixkick.com/forum/ezgallery.php?...iew&id=501