Ford YS4Z-6A666-BA Valve Assembly

You can Select Your Vehicle to check if YS4Z-6A666-BA fits your vehicle.

Most covered models have the PCV valve in the crankcase ventilation oil separator, low on the engine. Find it by following the PCV hose from the air cleaner housing. On 2.0L SPI engines, the PCV valve is in the valve cover. Before removing it, let the engine cool. On SPI engines, disconnect the PCV hose from the valve, then twist it out of the valve cover grommet. On 2.3L and 2005 2.0L models, raise the front of the vehicle and remove the under-engine splash shield. Remove the intake manifold for access to the PCV valve. Disconnect the hose from the valve at the oil separator. Push in the tabs and twist the PCV valve out. On all models, test the valve by shaking it. If it doesn't rattle, replace it. For PCV filter replacement, remove the air cleaner cover. Pull the PCV filter out of its pocket in the air cleaner housing. The PCV system air filter is in the air cleaner housing - remove the air filler for access. Inspect the filter and replace if clogged or damaged.

Installation is the reverse of removal.

To access the oil separator, the manifold and converter need to be removed.