Oil Catch Can, Eliminate that knock!

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by danlatu, May 22, 2017.

  1. danlatu

    danlatu Senior Member

    Joined:
    Apr 27, 2017
    533
    1,249
    2
    Location:
    maryland
    Vehicle:
    2011 Prius
    Model:
    Two
    Oil smell is from an air leak in a connector, hose or occ. Burning very small amounts of evenly distributed oil/water/fuel vapor is not terrible, it just causes fouled spark plugs, clogged piston rings, dirty valves/seats, decreased mpg, early egr failure, clogged egr ports in intake manifold, dirty map sensor (lack of power/stalling) carbon build up on pistons/heads with irregular compression and burning oil. It is the cold start knock from oil/water/fuel that is pooled up in the intake manifold that will blow a head gasket.
     
    Grit, mjoo, Bay Stater and 2 others like this.
  2. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    3,421
    2,802
    1
    Location:
    NorCal (Non Bay Area)
    Vehicle:
    2012 Prius
    Model:
    Four
    I have an oil extractor with a 6ft straight tip, is that something worth syphoning out the oil pool on the terms that no oil gets on the throttle plate and any other surface on engine parts?
     
    RMB likes this.
  3. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    39,316
    27,971
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Who knows how much stuff goes through, doesn't pool there?
     
    scona likes this.
  4. The Critic

    The Critic Resident Critic

    Joined:
    Oct 28, 2005
    3,041
    2,056
    0
    Location:
    CA
    Vehicle:
    2011 Prius
    Model:
    Three
    You will have to enlighten us on how that is possible...
     
    CR94 likes this.
  5. The Critic

    The Critic Resident Critic

    Joined:
    Oct 28, 2005
    3,041
    2,056
    0
    Location:
    CA
    Vehicle:
    2011 Prius
    Model:
    Three
    This post does not help your credibility. ATP205 has a conditioning effect on rubber seals. Piston rings are metal. ATP205 cannot “swell” piston rings.
     
  6. danlatu

    danlatu Senior Member

    Joined:
    Apr 27, 2017
    533
    1,249
    2
    Location:
    maryland
    Vehicle:
    2011 Prius
    Model:
    Two
    Where did I say piston rings???

    5C4BED55-DEA9-47FB-978E-C87E8E404514.jpeg 880F8E45-89FD-48C1-86D3-A188CABC9ECF.jpeg
     
  7. The Critic

    The Critic Resident Critic

    Joined:
    Oct 28, 2005
    3,041
    2,056
    0
    Location:
    CA
    Vehicle:
    2011 Prius
    Model:
    Three
  8. danlatu

    danlatu Senior Member

    Joined:
    Apr 27, 2017
    533
    1,249
    2
    Location:
    maryland
    Vehicle:
    2011 Prius
    Model:
    Two
    D58EA98F-215D-46FA-8118-4796FF2AC9D8.jpeg
    Seals and “O” rings are the same. I just replaced 2 rubber “O” rings on my power steering pump on my truck. Did not need to replace the whole power steering unit.
     
    Bay Stater and mjoo like this.
  9. danlatu

    danlatu Senior Member

    Joined:
    Apr 27, 2017
    533
    1,249
    2
    Location:
    maryland
    Vehicle:
    2011 Prius
    Model:
    Two

    14 parts air 1 part fuel is how combustion works. When an engine has fluid (oil/water/fuel) that is sucked into the combustion chamber, the ratio is no longer 14 parts air 1 part fuel. This creates a temporary knocking/hydro lock inside the combustion chamber that can destroy a head gasket, bend rods and stretch head bolts. Fluid is an incompressible solid. Oil/water/fuel is not suppose to be in the intake manifold. The gen3 prius has an intake manifold that likes to trap this fluid in two area's from the pcv system. Prii in cold, humid, short driving trips will experience more build up in the intake manifold than others. Oil/water/fuel rests in the area's circled in brown.



    Screen Shot 2019-04-22 at 7.03.56 PM.png
    Screen Shot 2019-04-22 at 6.48.16 PM.png
     
    Bay Stater, Robert Holt and ASRDogman like this.
  10. danlatu

    danlatu Senior Member

    Joined:
    Apr 27, 2017
    533
    1,249
    2
    Location:
    maryland
    Vehicle:
    2011 Prius
    Model:
    Two
    Oil/water/fuel accumulates under the throttle body. You can either remove the entire intake plenum to clean, use a rag or vacuum pump it out when throttle body is open.

     
    Bay Stater and Mendel Leisk like this.
  11. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    39,316
    27,971
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    I'm trying to ditch my Oil Catch Can accumulations, mixed it in with drained engine oil, took the mix to Mr. Lube to be poured into their waste oil tank. Trouble is, the OCC stuff settles to the bottom. I'll have to give it a swirl just before handing the container to them next time. It's pretty sorry-looking stuff.
     
  12. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    10,035
    13,692
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Swirl away;).

    At least there’s a way to get rid of it (y).
     
    Bay Stater likes this.
  13. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    39,316
    27,971
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Yeah, beats shooting it into the combustion chamber, not exactly Top Tier gas. :rolleyes:
     
    Bay Stater and Raytheeagle like this.
  14. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    10,035
    13,692
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Probably similar to the stuff you buy at a place like Rotten Robbie’s:whistle:.

    How fast does it separate when in the waste can?

    You could always change it up and get a non transparent container;).

    That’d save the swirl before return(y).
     
    Bay Stater, RMB and Mendel Leisk like this.
  15. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    526
    758
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Or you can take the OCC fluid collections to the recycling center. :eek:
     
    Raytheeagle likes this.
  16. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    39,316
    27,971
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    I think you're kosher to add OCC accumulations to waste engine oil. The stuff is coming from a a pcv valve on the crankcase wall, and that valve is at the end of a crude labyrinth, that catches some of the gunk and returns it to the oil, so you're just being a bit more efficient at waylaying the stuff.

    It's not a very nice brew though.
     
    Bay Stater likes this.
  17. James Powers

    James Powers Senior Member

    Joined:
    Sep 11, 2017
    387
    535
    0
    Location:
    Bay Area
    Vehicle:
    2014 Prius
    Model:
    Two
    Welp, fellas.... It happened... Got the knock that set off a check engine light with a misfire code on cylinder 1... Took it in, compression test, blooooown head gasket.... The OCC was on my list of mods to do! Looks like after it gets fixed, it will be expedited to the top of the list!
     
    Bay Stater, RMB, Raytheeagle and 2 others like this.
  18. scona

    scona Active Member

    Joined:
    Dec 10, 2013
    183
    184
    0
    Location:
    Courtenay, BC, Canada
    Vehicle:
    2013 Prius v wagon
    Model:
    N/A
    Ouch, how to get your day spoiled. What is the mileage?
     
    Mendel Leisk likes this.
  19. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    3,421
    2,802
    1
    Location:
    NorCal (Non Bay Area)
    Vehicle:
    2012 Prius
    Model:
    Four
    Sorry to hear that, was hoping to see your blizzard pearl at some SF meet up. If there’s any mods your parting out, let me know if decide to pass on the Prius.
     
    James Powers likes this.
  20. James Powers

    James Powers Senior Member

    Joined:
    Sep 11, 2017
    387
    535
    0
    Location:
    Bay Area
    Vehicle:
    2014 Prius
    Model:
    Two
    Big time, right? It has 147k on it but I bought it with 82k and while I am pretty sure the regular maintenance was done, but the EGR was probably never cleaned (it was a fleet vehicle so it had all maintenance) - which was on my list to tackle this weekend...
     
Loading...