[Got it at last]

'91 YJ 2.5L In the processes of figuring out why my fuel gauge didn't work and my fuel pump was crying I've created one heck of a rabbit hole. At this point I'm just rebuilding the fuel system front to back with the exception of injectors (I hope). Long story as short as possible, tank isn't able to get air, so as fuel is pumped out vacuum is created which smashed my tank and bent my sending unit into 90*. Found a collapsed vent line where it goes over the frame near the gas tank, no air would pass through it. Then as I worked forward I noticed someone plugged the tank side of the evap canister. Probably trying to fix the collapsing tank issue thinking it was pulling to hard on the tank /shrug.

Since I'm putting all this back and visual inspection of the evap canister looks positive I'd like to test it to verify operation. But I don't have service manual and plugging in the 1's and 0's into my typewriter isn't turning up a test procedure for me. Anyone have an idea how how to test it or a guide on the procedure? I saw a reference to a drop box link that contained service manuals but it appears to have been taken down at some point as the link doesn't work.

Side question: I'm probably not going to use the rubber isolator the fuel lines normal go through (depending on how tough they are to get). Any ideas of what I can wrap the lines in to prevent chafing on the frame?

Here is the link to my manuals which was working 10 minutes ago.

Dropbox

www.dropbox.com

Also below in my Signature under Jeep Manuals

I haven't seen how the 2.5 vacuum is routed with the EFI, but my early 4.2's canisters were sealed, and fume's were released into the fuel intake to be burned through a myriad of solenoid crap. Aftermarket Carb install changed that into an open system, at which point I put a one way vent valve onto the vent line to the tank allowing air into tank but restricting air out. But it sounds like the problem was in your gas cap. The tank should hold pressure, but not vacuum. Get a vented cap.