2000 Chevy blazer ls 2 door 4.3L 4 wheel drive keeping idling problem
 

Ok so i know why ive had to use starting fluid in the map sensor to start her up, however now i cant keep her idle once i start her up, no matter what you do she just starts and dies. Ive got a 3 push button 4 wheel drive button. Anyways theres an awful vacuum leak noise when she starts and dies now but i cannot find a diagram as to where exactly all 3? vacuum lines hook up! Please help as of this post im im-mobile and only changed out spark plugs for the miss problem. ..not even sure how this vacuum came un-done and need assistance. ..thanks, appreciated

Check the big vac line from the brake booster. I think that's the only one big enough to cause the kind of problems your describing.

Take pictures and post them so we can see what you are looking at.