Thread: ? about problem with pvc

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What I could find

I guess i didn't make the question clear enough!
1.)have a breather on the other valve cover (left side) & breather/pvc on the right valve cover which had a hose connect to the manifold vacum port on the botton rear side of holley carb.
2). when i started the car & while it is cold.. no problem, but when the engine gets up to temp (190)& or, been driven for 20 min. or more.. would have a popping noise coming out the right exhaust pipe when it is idling or in park with the engine running. ..checked everything... everything checked out o.k..., still had popping noise.
3). i then removed the pvc/breather & install a regular breather on the right vavle cover & capped the port on the carb..... so now there is a breather on both sides of engine....noise is gone !!!!!!!!!!!!!!!
4. so I know the problem is somehow linked or caused by the pvc valve(was not pluged up)???
5. ****I understand the basics of using a pvc valve and how to install it, & I would prefer to use one on this engine, BUT !!! I want to know why & how using the pvc valve is causing the poping noise in the right exhaust pipe when the car has been driven for awhile?????
6. this is not the first car i have built, & I have used a pvc valve sys. in all my cars, but this is the first time I have had a problem with a engine that is link to the pvc valve!!!!
does anyone have a answer to this problem, or have had it before on one of your own cars?????
thanks foir the help so far guys