There's no Ford F-150 with a 49-liter engine. The largest engines in Ford F-150s are significantly smaller. You likely have a typo in the engine size. Please specify the correct engine displacement (e.g., 5.0L, 3.5L EcoBoost, etc.) for an accurate PCV valve location.
Once you provide the correct engine size and year of your F-150, I can help you find the PCV valve location. It's usually on or near the valve cover, but the exact location varies by engine.
