Where is the PCV valve on a 98 4.0 Ford Ranger?

The PCV valve on a 1998 Ford Ranger 4.0L engine is located on the valve cover. It's a small, usually black, plastic valve with a hose connected to it. It's often near the back of the valve cover, but its exact position might vary slightly depending on specific engine variations. You'll likely need to look closely at the valve cover to locate it; the hose attached will be a clue.