2001 3.0 smoke test, any pointers?

[Grego]

Setting up to perform the same tests on my 2000 4.0 Ranger. Some good stuff on this thread to watch for!
Good job posting the update!

 

[Summers22]

Well 2 months later and 5 tank refills, P0455 is back. Ran another smoke test, no leaks using the bottom hose of the Purge valve that goes back to the gas tank, vapor canister. Used the top hose and had smoke coming from the top of the purge valve, the egr and the IAC vent. I may have to get a diagnosis done at a shop since my scanner is not bidirectional. Are all 3 of those leaks normal?

 

[Summers22]

I just watched a video showing how to test the purge valve (unplug it with engine running and remove bottom hose going to gas tank, if vacuum on the port, its bad) test showed no vacuum, so purge valve appears to be okay. It is a Motorcraft part that I replaced 1 year ago.