48 minutes ago, Captain Obvious said:

I think I did that already. That's what my first three posts were.

My first post was pointing out that your modification does not work.
My second post was telling you how to fix it and actually make it work.
My third post was additional info for you to help you understand why what you have done does not work.

 

Following you now.  I see why the screw as you said was wrong.  The port is in the side of the chamber.  Sealed the top on now .  Thanks for that tip. I cut the 2nd one I had with same issue open:

 

 

 

And from under the top for reference it is on the side , the tank vent is in the center:

10 hours ago, matt90gt said:

 I see why the screw as you said was wrong.  The port is in the side of the chamber.  Sealed the top on now .  I cut the 2nd one I had with same issue open:

And from under the top for reference it is on the side , the tank vent is in the center:

Exactly. The only way the port into the side neck of the canister gets down into the carbon part of the can is through the little hole you plugged with a screw.

I suspect that many of the original purge valves built into the cans don't work correctly anymore and I think your use of a new aftermarket purge valve is a cool innovative way to get around that. You just missed the mark a little bit with your original implementation.

10 hours ago, matt90gt said:

Following you now.   Thanks for that tip.

Glad to help.

@matt90gt, A lot of folks search the forum as you well know looking for problem solving clues. By chance did you have an opportunity to go back and edit your strategy for the vacuum canister. Reason I mention is it’s human nature to not read the entire thread. I know I’m guilty of that myself. Thanks for the input and welcome to the forum.

I believe I updated it all.  Let me know if I missed something.

FYI - opening the second unit I had (which was the original 1977 unit) all the internals were in fine shape.  nothing wrong with the filter pads, charcoal or segregation grates (dont know technical term here)

Are you going to try to utilize that one?

1 minute ago, Yarb said:

Are you going to try to utilize that one?

The second vapor canister?  no, I cut it open for my knowledge.

 

wrong thread

Edited September 21, 20231 yr by Dave WM