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There is not a PCV on gen IIIs. There are two lines coming from valve covers. Drivers side is valve cover to pre-throttle body just to give air flow if there's a vacuum. Passenger's side there's a line going to manifold, under side, behind the throttle body. This is the PCV system for car and will suck out vented gasses under vacuum. The outlet, at the valve cover, has a reducer in it. From say 9/16" size to a large pin hole. It's always open without a check valve. I've seen the location of this be either front or rear of valve cover. My '04 had this by the fire wall, but got newer NOS valve covers and it's at the front of the cover.
 
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