possible vacuum leak

[big monkey racing]

ok i went to smog and failed for high co so to fix the problem i changed the old o2 sensor and heard a vacuum leak sound so i replaced old cracked canister purge vacuum line.after i did that i was still hearing the leak hiss. followed the purge line back to the vacuum solenoids on the back of the engine and foud a broken soleniod and several bad vacuum lines. replaced those and the solenoid with one off of another engine. after all that i still hear the hiss. it goes away when i pinch off the purge line or if i remove the small solenoid vacuum line. am i looking at a bad canister or faulty purge cotrol valve. also is it possible that this whole problem be why i have a high co count. any and all suggestions are greatly appreciated.

[biggie]

Get starter fluid, spray it, when the idle changes that's where the leak is.

[Mrmatt3465]

You hear it hiss when you unplug the vacuum hose from the solenoid? Which one are you unplugging? Where does that line you unplug lead or T into?