Did i do this right?
went to autozone bought vacuum tester.
with engine warmed up
Disconnect the pcv breather hose from the air cleaner and plugged hose on the driver side.
disconnected hose from pcv and plugged the hose passenger side.
attach vacuum tester to the hose end of pcv valve where hose was.
and nothing happened? stayed at 0psi
TSB says that there should be a build up of pressure about 3psi.

did i miss something?

 

You did it wrong, read it again http://dodgeram.info/tsb/2000/09-05-00.htm


The test is useless, unless the gasket is severely blown. Remove the TB and look inside the intake with a mirror at all four corners for oil pooling.

 

X2 on the pooling or there is a dye that can be used made by MOPAR.

 

Look at your title, if it says Dodge Ram 1500 with 5.9L V8, your plenum gasket is blown. Thats the test.