I'm hearing a hiss around by the pcv valve ,it not loud but it's there. I'm going to use a cigar to push smoke thru the system. Where is the beginning of the system? Where should I start?

 

You can start at the brake booster, but plug up the intake.

 

Thanks where exactly am supposed to plug?

 

Is it normal for the pcv to hiss like there is a leak. I installed a oil catch can, I didn't notice any hiss before this. With the catch can installed i can hear the hiss from the passenger seat. I put the stock hose back on and there is a small hiss.
The car idles normal but with the catch can on it can put my ear to the hose on the pcv valve and hear it loud and clear.

Yes every thing is tight

 

some hiss is normal