Hi all:

First time changing my air filter.  As I took the element out the cleaner, the base fell off the carb and I noticed the hole in the bottom.  What does it do?  Should there be something attached to it?  As I looked for an answer I see that I have a hi-po cleaner for 60's-70s Fords.  The shopping site pix show the hole both open and plugged.  I attached my carb setup if that helps.  

Thanks

Tim

hi po air cleanerIMG_5027IMG_5028IMG_5029

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I was thinking the PCV used its own filter on the outside of the carb air cleaner.

the other emmission "vent" I thought of was the charcol canister and I think it should be "inside" the carb air filter.   Shop manual doesn't show though.

 

EDIT>>>>

I just visited the CJ Parts site and saw this filter does not have a "body" for beyond the filter element, SO, as Garth first replied, it would be used for PVC

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Thanks for the replies!   I need to get closer and see if it's connected via a PCV valve ('regulator valve' on the diagram), but the hose (highlighted yellow) that comes out of my driver's side valve cover goes back into the manifold.  

It sounds like a more stock setup would be to have that hose go to the air cleaner, then have a hose from the lower port on the carb connected to the oil filler cap.

With all of that said the car seems to run well and I haven't detected any oil leakage.

pcv question

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it's the clean air source for the PCV system, notice the hole is on the clean side of the filter element. that hole allows clean air into the valve cover and the opposite valve cover locates the PCV valve in the filler cap. the hose from the PCV valve connects to the intake manifold.

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