•  
    Results 1 to 6 of 6

    Thread: 2010 Aveo valve Cover question

    1. #1
      What's wrong with my car?
      Join Date
      Dec 2016
      Location
      Santa Clarita
      Posts
      2
      Garage empty: add car
      Thanks
      0
      Thanked 0 Times in 0 Posts

      2010 Aveo valve Cover question

      Hello,

      Does anyone here know what the purpose of the circular contraption is for inside of the valve cover? I couldn't locate a replacement part and was forced to purchase an entirely new valve cover. I took the old one apart which broke because it was brittle, but inside was an orange rubber ( ripped) with a spring on top. I can't seem to locate anything about it online. I would greatly appreciate any help about it or the name of that specific part.

      Thanks!
      Art.



    2. #2
      What do you mean there's no turbo?
      Join Date
      Jul 2014
      Location
      Long Island, NY
      Posts
      308
      Thanks
      0
      Thanked 50 Times in 48 Posts
      Do you have a pic for the part in question?
      2004 Aveo beater car
      2005 Aveo LT. 5-speed beater car (DOA)

    3. #3
      Almost time to do my timing belt xintersecty's Avatar
      Join Date
      Sep 2010
      Location
      West Union, SC
      Posts
      1,687
      Thanks
      86
      Thanked 181 Times in 156 Posts
      Bet it is a pressure equalization valve for the hose that goes into the oil cover from the air intake.
      Please do not power off, firmware update pending.....

    4. #4
      What's wrong with my car?
      Join Date
      Dec 2016
      Location
      Santa Clarita
      Posts
      2
      Garage empty: add car
      Thanks
      0
      Thanked 0 Times in 0 Posts
      Hi,

      Yes here is the part. Thanks!

      Name:  IMG_3574.JPG
Views: 2633
Size:  146.9 KB

    5. #5
      Almost time to do my timing belt xintersecty's Avatar
      Join Date
      Sep 2010
      Location
      West Union, SC
      Posts
      1,687
      Thanks
      86
      Thanked 181 Times in 156 Posts
      There are parts missing from that round thang. If you look at this picture:
      Name:  back side of valve cover.jpg
Views: 1967
Size:  8.2 KB
      You can see the vacuum line and then the vent to the side.

      It's known as the engine vent.
      Please do not power off, firmware update pending.....

    6. #6
      Almost time to do my timing belt xintersecty's Avatar
      Join Date
      Sep 2010
      Location
      West Union, SC
      Posts
      1,687
      Thanks
      86
      Thanked 181 Times in 156 Posts
      I found this on the chevy cruze forum, it make sense to me:

      More PCV and valve cover goodness

      So I originally though that oil was blowing out of my oil cap from damaged caused by my oil catch can issues. So I was going to pull off the valve cover to see what was going on. Obviously the PCV system was blocked some how. From everything I've rad and heard from techs at GM, there are two PCV valves, one at the turbo and another in the valve cover. The one in the valve cover is not serviceable (will get to that in a minute). Last time I had this problem they replaced my valve cover.

      So, I took off the valve cover to check things out.

      0929131711a.jpg

      Markj2222 mentions that the baffles are enclosed. Usually baffles help keep oil in the valve cover while letting air vent out. I thought maybe mine had collapsed or something. As he said, there is an enclosed channel that air runs through that is in fact sealed off. Looking at the system, air coming into the valve cover will travel over to the cam gears and into the head and will make their way up into the valve cover. The air goes from #3 and #2 around the valve cover and over to #1 where it travels to the port on the intake manifold that connects the PCV tube.

      0929131711b.jpg

      So, what they heck?! What is my problem? I figure there is something inside the channel that is blocking air flow. So I flood the channel with water and force air through it. I do all sorts of tests on it with air and blocking each port, forward and back. All seems fine. Then, just out of curiosity I have a look at that round thing that is across from the oil cap. I always wondered what that way. So I look at it close and notice that it has a little spout that is open. It's a vent! Then I notice that the channel forces the air into this area before it goes to #1 to exit the valve cover.

      0929131829.jpg

      Inside of this thing is a diaphragm! Look in there close and you'll see an orange rubber piece. There is a spring attached to it (at least that what it feels like when I press down on it with a tool). So there isn't a "valve" in there, it's a diaphragm and apparently when the PCV system isn't working correctly it gets jacked up. So I clog up all 3 ports and blow air into the channel. Out comes water from the that tiny vent.

      The reason why it's not serviceable is because that channel cover and the cap to the diaphragm are sonic welded in place. I'm sure I could have gotten them off (maybe without damage) but I doubt I could get them back on in a way that they would be able to handle the pressure.

      So, this is how our PCV system works and what is under/in that valve cover.






      Please do not power off, firmware update pending.....

    Similar Threads

    1. 2007 Aveo dripping after timing belt & valve cover swap
      By infinityedge in forum Troubleshooting and Maintenance
      Replies: 3
      Last Post: 06-28-2016, 04:18 AM
    2. Question about buying a new valve cover gasket
      By outdoorsaddix in forum Engine & Drivetrain
      Replies: 1
      Last Post: 04-23-2015, 11:41 AM
    3. did some airbrushing to the valve cover cover
      By camopaint0707 in forum Photographs and Videos
      Replies: 3
      Last Post: 12-29-2014, 01:48 AM
    4. 2009 Aveo will not crank after replacing Valve cover gasket
      By brutus831 in forum Troubleshooting and Maintenance
      Replies: 19
      Last Post: 03-24-2014, 03:41 PM
    5. 2004 chevy aveo p0700 & mystery valve cover hose??
      By nae28 in forum Engine & Drivetrain
      Replies: 2
      Last Post: 09-10-2013, 05:31 PM

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •