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.

What to do with PCV with new valve covers?

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Old Jan 11, 2023 | 09:39 PM
  #1  
CarbineElement's Avatar
CarbineElement
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From: North Carolina
Default What to do with PCV with new valve covers?

I have a new set of covers for an 86 EFI car. the valve covers accept the push in style breathers used in carbureted cars, what am i supposed to do with the PCV hose?

i've seen videos of people with push in breathers that also have a place for the hose, but i cant find them anywhere.

do i just leave the PCV open to the air? or cap it off? i cant find info for this anywhere and no Youtube videos talk about it.
Old Jan 12, 2023 | 09:49 AM
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drhoward
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You're looking for something like this?

https://www.summitracing.com/parts/e...gaAiD6EALw_wcB

I've seen them for sale at most parts places as well as amazon etc
Old Jan 30, 2023 | 11:59 AM
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mjr46
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Originally Posted by CarbineElement
I have a new set of covers for an 86 EFI car. the valve covers accept the push in style breathers used in carbureted cars, what am i supposed to do with the PCV hose?

i've seen videos of people with push in breathers that also have a place for the hose, but i cant find them anywhere.

do i just leave the PCV open to the air? or cap it off? i cant find info for this anywhere and no Youtube videos talk about it.
you can’t just leave the PCV open to the air that will create a vacuum leak.. Since EFI cars had the PCV in the back of the lower intake. You can do one of two things first get the correct set of valve covers for an EFI car. That’s the easiest , second plug off the PCV locations in those valve covers. The extra work to make them usable is not worth it in my opinion. Furthermore, if you draw the PCV off of the end of the valve cover, it can lean the cylinder out in that area or the best bet is drawl it off the intake where the factory had it.
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