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1970 Dauntless Pcv Connection

Discussion in 'Early CJ5 and CJ6 Tech' started by Cj5dale, Sep 22, 2021.

  1. Sep 22, 2021
    Cj5dale

    Cj5dale Member

    East Tn
    Joined:
    Aug 19, 2021
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    103
    I just saw this pic from a posting of a 1970 CJ5 on the Market Place forum and was wondering if the way they have PCV connected to the oil bath air filter is correct. I thought the PCV was supposed to connect to back of the carb?

    upload_2021-9-22_16-5-12.jpeg
     
  2. Sep 22, 2021
    John Gedde

    John Gedde Been around the block once or twice...

    Middle Island, NY
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    Oct 23, 2019
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    125
    It's wrong. That stub on the back of the oil bath air cleaner was used as fresh air supply for a smog pump system that almost everybody removed. You are correct. the base of the carb goes to a hose with the PCV valve at the other end. The PCV valve goes into that grommet on the rear end of the right hand valve cover.

    John
     
    timgr, Cj5dale and colojeepguy like this.
  3. Sep 22, 2021
    Cj5dale

    Cj5dale Member

    East Tn
    Joined:
    Aug 19, 2021
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    That stub on the back of the oil bath air cleaner was used as fresh air supply for a smog pump system that almost everybody removed

    Is that stub typically just plugged?
     
  4. Sep 23, 2021
    Beach66Bum

    Beach66Bum 1966 Tuxedo Park Mark IV 2021 Sponsor 2020 Sponsor

    Big Island on...
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    If the smog equipment has been removed, then yes, it can just be plugged.
     
  5. Sep 23, 2021
    timgr

    timgr We stand on the shoulders of giants. 2021 Sponsor 2020 Sponsor

    Medford Mass USA
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    Both the air filter connections supply filtered fresh air, one to the crankcase and one to the air injection (smog pump) system. You could put the AI back, but I expect the parts are hard to source now. There is no local smog check for a '70 anywhere, that I know of. Otherwise you need to plug it so no dirt/dust bypasses the air cleaner element and enters the carburetor.
     
  6. Sep 23, 2021
    Cj5dale

    Cj5dale Member

    East Tn
    Joined:
    Aug 19, 2021
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    103
    Thanks! I’ll be plugging mine. The smog control is long gone.
     

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