Clean and Reinstall PCV Valve?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by brick, Jul 22, 2012.

  1. brick

    brick Active Member

    Joined:
    Dec 10, 2006
    1,083
    79
    0
    Location:
    Upstate NY
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    When I did the PCV valve on my wife's car it looked like nothing more than a metal housing with a ball bearing rattling around inside. That left me wondering, why not just clean and reinstall the original valve? Is there a reason why that wouldn't be nearly as good? I realize it's a $10 part but I have to ask the question before I go buy another for my own car.
     
  2. jdenenberg

    jdenenberg EE Professor

    Joined:
    Nov 21, 2005
    3,953
    1,950
    1
    Location:
    Trumbull, CT
    Vehicle:
    2020 Prius
    Model:
    LE AWD-e
    The Gen2 Prius PCV is a pain to get at. If I were going to make that effort, I would use a new PCV.

    JeffD
     
    PrimeDan and Ryanpl like this.
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,210
    6,514
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    I recall paying ~$6 when I bought the PCV valve a few years ago for my 2004.

    You could immerse the valve in gasoline or similar solvent to clean it, but why bother.
     
    Ryanpl likes this.
  4. darknd666

    darknd666 Junior Member

    Joined:
    Nov 3, 2025
    70
    13
    0
    Location:
    Jacksonville, NC
    Vehicle:
    2012 Prius v wagon
    Model:
    N/A
    Sorry to revive an old thread, but is it advisable to take this cover off to clean the PCV? What is behind it?
     

    Attached Files:

  5. pasadena_commut

    pasadena_commut Senior Member

    Joined:
    May 2, 2019
    2,861
    851
    0
    Location:
    Southern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    That doesn't look like the PCV valve on a 2nd generation Prius. Let me rephrase that, that doesn't look like the area on a Gen2 Prius where the PCV valve is mounted. Is that perhaps a picture from the Prius V listed on the left in your post?
     
    Mendel Leisk likes this.
  6. darknd666

    darknd666 Junior Member

    Joined:
    Nov 3, 2025
    70
    13
    0
    Location:
    Jacksonville, NC
    Vehicle:
    2012 Prius v wagon
    Model:
    N/A
    Sorry I thought I posted this in the correct section.
     
  7. Mendel Leisk

    Mendel Leisk MMX GEN III

    Joined:
    Oct 17, 2010
    60,925
    41,923
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    As long as we’re here: I’d leave it be, it has form-in-place gasket, will be a fight to remove. There’s a labyrinth passage, presumably to condense oil mist and drain it back into crankcase (not very effective though, judging from intake manifold oil accumulations). I don’t think it’s prone to clog, best left alone.