5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

pcv valve

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Old 11-20-2008, 11:30 PM
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5.0stang123
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Default pcv valve

Where the hell is the pcv valve, i looked for it for like an hour and i still cant find it? Do i have to take stuff off to find it?
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Old 11-20-2008, 11:58 PM
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primetime5.0
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very back of the lower intake
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Old 11-21-2008, 12:00 AM
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5.0stang123
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Ya well how do i get too it? do i have to take all the intake off
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Old 11-21-2008, 12:09 AM
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primetime5.0
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nah you dont, its just below a bunch of crap back there
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Old 11-21-2008, 02:08 AM
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luckythirteen13
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just reach your hand back there. there will probably be some wires/hoses in the general area but it helps to know what your looking for
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Old 11-21-2008, 09:59 AM
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samseed101
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A lot of times, I just reach back there and feel for it. It will be on the center of your lower intake and will have a large hose going to it. You can simply give it a tug and it should pop right out of the grommit.

This picture may help a bit. Now keep in mind that in this picture, my Upper Intake is actually off, so what you are seeing is the Lower Intake along with a 1" spacer on top of that. Now see the red circle with the arrow pointing to it? That's a rubber hose that is about 6 inches long (give or take.) That hose goes straight down to the PCV valve. So if you follow directly down that hose, in about 6 inches you'll run into the PCV and the grommit. As you can see, it's dead center in the rear.

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Old 11-21-2008, 10:01 AM
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LoL, looking at that picture also brings back memories. You can see my poor attempt at trying to hide / camo the nitrous solenoids. It actually worked for the most part. It semi-blended in so that unless someone know what they were looking at or had a clue about cars, they would just think that it was another line or object under the hood.

edited to add: and yes that's a breather on the valve cover. But PCV was disabled in my setup. It was easier to control blow by and easier to tune it that way
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Old 11-21-2008, 10:44 AM
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While you are in there servicing the PCV valve you might as well get a dental pick (or similar tool) and pull the PCV screen out (located under the PCV valve) and clean it up. I use gasoline to clean mine.
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