Where is the PCV valve located on a 1991 Ford F150? PCV Valve Not all engines are the same. I am going to guess that you have a 4.9 Liter. It also came with a 5.0 and one other motor, I believe. Try looking under the intake manifold. Here is more input: Your pcv valve is inder the plenum on the passenger side inthe back corner. find the hose by its self on the top of the plenum follow it. it connects to the pcv. |
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