First, you need to find the PCV valve. Most of the time, it’s installed directly into the top valve cover of the engine. If you have a V8 or V6, it’s on one of the valve covers, and depends on the manufacturer for which specific cover. On this Ford 300, it’s on the back towards the firewall, tucked underneath the intake. It will look like a little plug fit inside a grommet with a hose coming out of it. On older cars, the engine diagram inside the engine bay can clue you into its exact location.
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To remove the valve, you either need to unscrew it or, in some cases, pull it straight up. For the Ford, it’s only held in by the tension of the rubber grommet, so it does not require any specific tools to remove. If the valve screws into the valve cover, you may need to use a combination wrench to get the valve loose. Either way, it’s a straightforward process to remove on most cars.
Once it’s removed, you need to take the hose off. If it’s stuck, you may need to use a pair of pliers to gently remove the old valve from the hose. You don’t want to damage the hose in this process. Although you case use this time to check if the hose and the grommet are dry rotted or otherwise needing to be replaced.
