PCV Valve Part Number??? 2008 GT

maroonandwhite

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Time for the newb questions so thanks in advance!

I am having a bear of a time finding a site that will confirm the most up to date part number for the pcv valve in my 2008 GT 4.6. The OEM sites don't even return a result. Rock auto only lists the hoses.

Does anyone have recent experience changing these?

Thanks,
-Ben
 

maroonandwhite

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KCV 166 motorcraft.
Thanks, just got the car home yesterday and mistakenly thought I had an actual valve with connector. Apparently these have a different system. I believe both of my hoses are good on driver and passenger side. I just noticed last night when cleaning the throttle body that there was a little oil pooling in the plenum. I'll have to research that a bit. No issues or error codes at the moment. I just want to go through and do initial maintenance where needed.
 

Midlife Crises

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The PCV is built into the left valve cover on your car. It is not a serviceable item. You would replace the valve cover to get a new valve. Replacing the PCV or adding another will not stop the oil from entering the intake manifold.
 

maroonandwhite

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The PCV is built into the left valve cover on your car. It is not a serviceable item. You would replace the valve cover to get a new valve. Replacing the PCV or adding another will not stop the oil from entering the intake manifold.
Thanks. Seeing some mention a catch can. I’m going to dive into the research this evening.
 

07 Boss

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Or you can switch to breathers and vent it to the atmosphere instead of running it back through your engine. If you have oil in your intake, your charge motion plates are pretty gummed up too. I've always run breathers on my builds just because I want just air and gas going through my intake. And they just neaten up the engine bay a bit by getting rid of the hoses.

Below you will see your standard 3-breather set up I use in place of the PCV system.
 

whitmanink

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i installed a catch can last year and run full syn oil..

after 2000 miles i decided to change the oil and empty the catch can,

i think a whole 5 drops worth of oil were in it?

which is crazy because my charge motion plates were all gunked up so i assumed the catch can would be half if not almost full?

im glad i have one installed but i was expecting to see more oil in it?

this is on the driver side btw
 

ghunt81

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I dunno, I typically only change my oil once a year (barely put 3000 a year on it) and it usually has a decent amount in there, but since it gets condensation mixed in with it it probably makes it look like a lot.
 

Midlife Crises

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Here is another variation of the engine ventilation system similar to what 07 Boss described. Both valve covers are connect to a single, vented catch can with 3/4” hose. There is no PCV and no connection to the air induction system at all. After I found oil in the intercooler under the blower, this is how I “fixed” it. I have no oil in my intake and my spark plugs stay cleaner, longer. Unless I stain them with obtain booster.

753C1192-18A5-47E0-8657-DA2E73BF090B.jpeg
 

Scmustang197

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Sorry new to forums, 07 boss what part numbers are the filters and do I have to do anything special to install these, thanks.
 
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i installed a catch can last year and run full syn oil..

after 2000 miles i decided to change the oil and empty the catch can,

i think a whole 5 drops worth of oil were in it?

which is crazy because my charge motion plates were all gunked up so i assumed the catch can would be half if not almost full?

im glad i have one installed but i was expecting to see more oil in it?

this is on the driver side btw
The driver side hose is the intake for the PCV system. You need a catch can on the passenger side which is where the oil vapors exit. That explains why you didn't collect any oil.
 

whitmanink

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The driver side hose is the intake for the PCV system. You need a catch can on the passenger side which is where the oil vapors exit. That explains why you didn't collect any oil.
oh , i thought the driver side was the bad side?
well tbh im looking at putting breathers on the engine instead,, but dunno if that would work well boosted?
 

Midlife Crises

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The driver side hose is the intake for the PCV system. You need a catch can on the passenger side which is where the oil vapors exit. That explains why you didn't collect any oil.
If you are adding a catch can to the 3 valve PCV system it belongs on the drivers side. This places it between the intake manifold plenum and the left valve cover. (The side with the PCV valve built into the valve cover). If you place the catch can on the passenger side valve cover it will do nothing because no air is leaving that side of the crankcase. Fresh air comes into the crankcase through the passenger side valve cover from the clean air duct.
 

Forty61

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The driver side hose is the intake for the PCV system. You need a catch can on the passenger side which is where the oil vapors exit.

If you are adding a catch can to the 3 valve PCV system it belongs on the drivers side. Fresh air comes into the crankcase through the passenger side valve cover from the clean air duct.

Well.. which is it guys?
 
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I have catch cans on both the driver's and passenger side, even though the passenger side is the most important side on this engine. The yellow circles are the two catch cans, and the red circle is the PCV valve(brand new last month). These catch cans work and are a must-have for good engine care.

Catch Can.jpg
 

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