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Has anybody had PCV valve issues?

Discussion in '1982-Present GM Diesel' started by Can Can, Mar 28, 2004.

  1. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    I was just reading on another site somewhere that if you notice an oily mist coming from your oil fill tube it means that your PCV filter may be pooched. I checked my fill tube today and did notice a bit of mist coming from the tube after I shut the truck off.

    Can someone fill me in on this? I've never replaced the PCV valve on my 6.2 because I didn't know how to tell if it needed to be swapped out.... /forums/images/graemlins/dunno.gif
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    A PVC is for a gas engine. The 6.2 uses a CDR valve, which
    I assume should be changed periodically. I really don't know the indications for replacement though.

    Rene
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Hmmmmmm.......I have a breakdown of my emission equipment and it clearly states that the part in question is a PCV valve.

    Maybe the non-EGR intakes(like yours) don't come equipped with said part? /forums/images/graemlins/dunno.gif
     
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Mine has the CDR at the top/front passenger side of the motor beside the oil fill tube. There are a couple of rubber lines going from there to the inlet of the manifold.

    Rene
     
  5. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    I just spent a few minutes trying to find the page I was talking about. You're right, Rene, it's definitely called a "CDR Valve". I stumbled onto this page when I was trying to figure out if I had a blown head gasket/cracked head:

    LINK
     
  6. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    I wonder how accurate the "6000 miles" interval is? I've put over 100K on my truck and have never even given the CDR /forums/images/graemlins/wink.gif valve a second thought....... /forums/images/graemlins/eek.gif

    Looks like I'll be ordering a new one tomorrow!!! /forums/images/graemlins/1zhelp.gif
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    That link was discussed at some length by members with much more tech knowledge than I have. I was left with the impression that 'Don' is a first rate asshat that really doesn't know very much about 6.2's. /forums/images/graemlins/deal.gif /forums/images/graemlins/dunno.gif Maybe one of those smarty pants will chime in and give us the tech rundown again?

    Rene
     
  8. imiceman44

    imiceman44 1 ton status

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    [ QUOTE ]
    That link was discussed at some length by members with much more tech knowledge than I have. I was left with the impression that 'Don' is a first rate asshat that really doesn't know very much about 6.2's. /forums/images/graemlins/deal.gif /forums/images/graemlins/dunno.gif Maybe one of those smarty pants will chime in and give us the tech rundown again?

    Rene

    [/ QUOTE ]

    I remember that debate and I don't think you will get better answers this time.
    /forums/images/graemlins/dunno.gif
     
  9. 6.2Blazer

    6.2Blazer 1/2 ton status

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    I was just going to post a question regarding the CDR. This last weekend while working on my truck I noticed some oil residue in the intake....looks like I better do something about it.

    Does anybody know what should be done to "service the CDR"....or should I just get a new one.

    Is there anyway to eliminate the CDR (like just use a regular crankcase vent/filter). Yeah, yeah, I know it's part of the emissions but this truck is for off-road use only. /forums/images/graemlins/whistling.gif
     
  10. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I'd just replace it...doesn't look like a spendy part at all.

    Rene
     
  11. BlueBlazer

    BlueBlazer 1/2 ton status

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    You could just run a "draft tube" like on medium and heavy duty engines that just lets the crankcase gasses vent to the atmosphere. You will need to make sure you keep water and junk out of it if you go wheeling.
     
  12. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    [ QUOTE ]
    I'd just replace it...doesn't look like a spendy part at all.

    [/ QUOTE ]

    WRONG!!! Just shy of $70 /forums/images/graemlins/doah.gif from GM, and there are no aftermarket manufacturers that build CDRs.
     
  13. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    How often have you replaced it? Spend $70 now and you'll likely never replace it again... /forums/images/graemlins/smile.gif

    Rene
     
  14. 6.2Blazer

    6.2Blazer 1/2 ton status

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    [ QUOTE ]
    [ QUOTE ]
    I'd just replace it...doesn't look like a spendy part at all.

    [/ QUOTE ]

    WRONG!!! Just shy of $70 /forums/images/graemlins/doah.gif from GM, and there are no aftermarket manufacturers that build CDRs.

    [/ QUOTE ]

    Hmmm, did an online search for the part. Napa doesn't list this part but Autozone lists a "PCV valve" for about $35. I know A-zone isn't always reliable, but I cross-referenced the part number compared to the gas engine and it was different....the PCV for the gas engine was like a $3 part.
     
  15. cegusman

    cegusman 3/4 ton status

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    I replaced mine a while back, paid $30-$35 at Oreill'y Auto Parts.
     
  16. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    That $70 would be in Cdn funds at a cdn GM dealer. Still a bit high, but within range for the stealership.

    Rene
     
  17. imiceman44

    imiceman44 1 ton status

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    [ QUOTE ]
    You could just run a "draft tube" like on medium and heavy duty engines that just lets the crankcase gasses vent to the atmosphere. You will need to make sure you keep water and junk out of it if you go wheeling.

    [/ QUOTE ]

    yep that's what I have on my perkins. /forums/images/graemlins/grin.gif
     
  18. 6.2Blazer

    6.2Blazer 1/2 ton status

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    I need to do something with mine, but Autozone is the only place that lists the part but it's currently out of stock (as-in their warehouse is out of stock).

    Can I just remove the CDR and replace it with a filter or something?
     

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