oil coming from valve cover breather

Discussion in 'Engine Topic' started by nagrom28, May 9, 2014.

  1. biker

    biker Veteran Member

    Messages:
    835
    Likes Received:
    70
    Joined:
    Dec 7, 2014
    Location:
    New Liskeard Ontario Canada
    Nicely done out there in Sask.
     
  2. Francesco

    Francesco Veteran Member

    Messages:
    116
    Likes Received:
    7
    Joined:
    Jan 9, 2015
    Location:
    Drummondville, Quebec
    Hi guys!! I changed my valve covers and they fit well and no leaks. On one side I have the oil fill cap and behind that there's the whole for the PCV valve connected to the back of the carb. On the other valve cover the whole is plugged. Does that mean that air comes in and out of the air cleaner?
     
  3. Coadster32

    Coadster32 Veteran Member Lifetime Gold Member

    Messages:
    1,631
    Likes Received:
    133
    Joined:
    Oct 2, 2013
    Location:
    Milford,CT
    No sir....you need a breather cap where your oil fill cap is. That is where it would pull fresh air from. The air cleaner is for the engine combustion only.
     
  4. Francesco

    Francesco Veteran Member

    Messages:
    116
    Likes Received:
    7
    Joined:
    Jan 9, 2015
    Location:
    Drummondville, Quebec
    If I have original GM valve covers, what would be the diameter size of the breather push in nozzle? The ones I have on my old chrome ones are too big and don't fit my covers. I found the 3/4 nozzle type . maybe they will fit.
     
  5. Coadster32

    Coadster32 Veteran Member Lifetime Gold Member

    Messages:
    1,631
    Likes Received:
    133
    Joined:
    Oct 2, 2013
    Location:
    Milford,CT
    If you have OEM GM valve covers, or any valve covers for that fact, then you can measure the hole. The last ones I bought, I had to "massage" to get them to fit, even though they came in the "right" size.
     
  6. Francesco

    Francesco Veteran Member

    Messages:
    116
    Likes Received:
    7
    Joined:
    Jan 9, 2015
    Location:
    Drummondville, Quebec
    Yes! I did exactly that. Its the 3/4 inch nozzle breather. Thanks!
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.