Hi!!
The PCV is designed to route the engine blow-by back into the combustion chamber to be re-burned. You'll find it on top of the valve cover, almost half of it is IN and the other half is plugged into a 1/2" - 3/4" OD hose, so don't expect to see much of it. if you stand in front of the vehicle, is aligned a bit to the left of the radiator cap.
Pull the valve together w/hose, and unplug it twisting n pulling the valve at the same time. Do not use excesive force or you may damage the hose.
Good luck!!
SOURCE: where is pcv valve located on 2000ford focus with
follow the vacuum line from the main block
check out this little picture
SOURCE: where is the pcv valve located on a 2000 zetec engine?
try Google.com [2000 focus pcv valve] somebody should show you where it is.good luck, John
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SPI Vacuum Diagram
If it's equipped with the 2.0L SPI engine (eighth digit of the VIN is 'P'), the most common place for a vacuum leak on these engines, is from the PCV hose that runs from the valve cover to the back of the throttle body. Where it usually rots through is the elbow at the back where it connects to the throttle body. Hope this helps.
The only place i could find any views is here.
vacuum hose diagram - Focus Fanatics
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