Is air ONLY coming out of that fresh air vent hose on the TB?

I was just thinking that if the intake valve is open on the cylinder you put air to the air would get into the intake manifold and could get back down into the crankcase through the PCV system. Air would obviously be coming outta every hose and the TB if this was the case though. Just something to check before you tear the head off.

Why don't you take the PCV hose off the top of the intake and see if air leaks outta the intake there.

 

in that case i must have 4 stuck intake valves? hope its something that simple?

 

and yes,, it seems to only come out of the frest air hose,, or the valve cover.