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Where is the PCV valve located on a 1990 Ford Ranger 4-cylinder engine?

On a 1990 Ford Ranger with a 4-cylinder engine, the PCV valve is typically located on the valve cover. It's usually a small, usually black, plastic or metal valve with a hose attached to it. The hose will connect to the intake manifold.

However, the exact location on the valve cover can vary slightly depending on the specific engine (2.3L or 2.9L). It's best to consult a repair manual specific to your engine size for a precise visual. A quick online search for "[your engine size] Ford Ranger 1990 PCV valve location" with images will likely give you a picture to help you locate it.