09 PCV Valve

Checking whether or not the PCV is functioning is simple.

1) Warm up vehicle to operating temp.
2) Locate PCV and detach hose. Make sure hose stays away from any moving parts.
3) Start vehicle again and place finger over the PCV nipple. You should feel a vacuum. If you do not, just replace it. If you do feel a vacuum, then check the PCV ventilation hose(same hose you detached). Hose could be clogged.

NOTE: I would replace the PCV reguardless whether it works simply due to the mileage of your Foz. Not sure what the service manual states for that year as far as how often one should change it out, but I replace my 2003 Toyota RAV4’s PCV every 30k. She’s old with 155k original miles.

Thank you, Never done this before, any surprises, I don't here a rattle in the new one and use pipe tape or anti seize

Whitesc said:

<snip>NOTE: I would replace the PCV reguardless whether it works simply due to the mileage of your Foz. Not sure what the service manual states for that year as far as how often one should change it out, but I replace my 2003 Toyota RAV4’s PCV every 30k. She’s old with 155k original miles.

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+1 on this ^^^^^. The 'rattle test' is fun to do but simply replacing the PCV valve is a much better choice. I might go more than 30k, but PCV valves are not that expensive. If the valve gets stuck (either open or closed) it can do serious mischief on your engine.