My name is Johnny Lovsey and I made quite a few post about the issue of the computer in my blazer not resetting for the emissions. I bought three testers the last being a Tech II from China and it works just like the real thing. But if it ever breaks don't know what I will do. Anyways the new Tech II told me why my emissions wasn't resetting and it was because of a pin leak. And visually searching for it was futile. So I made my own tool you can see it and how it saved me tons of money and time. Its under The Ultimate Automotive Leak Detector on U tube a very good explanation as to how I was able to find and fix a pin hole you couldn't even see with the naked eye by building this tool and then using it to locate a impossible leak.https://chevroletforum.com/forum/ima...ons/icon14.gif

 

so the monitor was running to completion and failing. with your tech2 you can go in and view each monitor state. its status will be pass, fail, not run.

I checked out the video; well done.
one correction; the green cap is not the purge port, its the evap service port