Hyundai Repair: vacuum leak, air flow sensor, vacuum leak

Question
I have had nothing but trouble since I bought my 2000 accent.  I replaced 2 o2 sensers gave it a tune up and changed the feul filter and now my code says I have a vacuum leak? I just dont know where to look.  I have tried the soapy water and the wd-40 tricks on my hoses in my engine and didnt see any bubbles.  Can you help me?

Answer
If you have code P1128, then you should check your air flow sensor.  There's a very nice TSB about this code which you can access at www.hmaservice.com.  You'll need to register for a free account, and the site requires Internet Explorer.  You'll be looking for TSB 01-36-022.

If you have some other code, I'll probably need to know the code to provide useful information.