The PCV valve is located to the right of the exhaust manifold as you are looking at the engine from the front. Pay special attention to the elbow as it is fragile with age/heat.
Where Is The Pcv Valve 99 Ford Escort Zx2 Picture?
It is located just to the right of the exhaust manifold on the engine block. Be very careful with the elbows attached to both the valve itself and directly under the throttle body. They become very fragile and oil soaked with age.