Oil Catch Can, Eliminate that knock!

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

  1. Raytheeagle

    Raytheeagle Senior Member

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    Id employ the philosophy that better those lights are caught and not sent through the combustion process than to have them go through;).

    An old wives tail:

    An ounce of prevention is worth more than a pound of flesh(y).
     
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  2. scona

    scona Active Member

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    Sounds like you need a higher "tech" model of OCC. Perhaps one that uses an external heating system to keep it operational at temperatures below freezing!
     
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  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Catch can warning for cold climates!!! - Mazdaspeed Forums

    Discussion here about OCC's freezing. One contributor suggested to put an ounce or two of windshield de-icer fluid in the can. And also, if it's got a bottom drain, warm it with a heat gun, make sure there's not a stuck lump of ice remaining.
     
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  4. Lightning Racer

    Lightning Racer Active Member

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    Cold temperatures definitely increase the amount of water caught by the OCC. Over the summer, I was catching very little, checking every fill up. About 6 weeks back, I was driving across Canada, and temperatures were dropping to around 0 C, increasing condensation of water vapor inside the OCC. I was driving about 500 miles per day and checking the OCC every fill up. I skipped the OCC check one time, and the next check, only two days since the previous check, the OCC was maybe 2/3rds full!

    When I was emptying the can that time with it so full, I realized that I was possibly tipping the OCC far enough over while unscrewing the bottom to let some of the liquid go back down the hoses. I've been more careful keeping the OCC level when unscrewing the OCC since then. I still am using clear braided hoses (and the Ruien-style OCC, mounted same location as danlatu's), and I now think that the outlet hose finally starting to get stained finally is probably due to the contents of the OCC swishing around during turns (especially left turns)/acceleration/braking, etc when the OCC is over about half full. I didn't add steel wool scrubbies or other media to the OCC, and it has worked well since install (January 2018). I am keeping it that way for ease of cleaning it out when the contents are more of a greasy foam.
     
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  5. mjoo

    mjoo Senior Member

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    Good point Lightning - there's no steel wool in my OCC either.

    Pixel XL ?
     
    #1225 mjoo, Nov 19, 2018
    Last edited: Nov 19, 2018
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  6. Mendel Leisk

    Mendel Leisk Senior Member

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    I usually plug in our block heater for a couple of hours before the first cold start of the day. If I was in the interior I'd consider adding a small oil pan heater, on the same circuit.
     
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  7. KarlW

    KarlW Junior Member

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    I just bought a used 2014 Prius v with 37k mileage. I've been reading and searching the various threads regarding maintenance and issues with the Gen 3 Prius. The idea of adding the OCC is intriguing, however a couple of questions arise:
    1) I have an extended warranty , would it void or affect that?
    2) I live in Southern California, would it affect smog testing?
    3) Is it prudent to add OCC sooner than later, or with current mileage under 40k, does it make more sense to do it at 80or 100k?
    I appreciate all the wisdom, experience and input that is on this forum.
    Thanks,
    KarlW
     
  8. Mendel Leisk

    Mendel Leisk Senior Member

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    Something like this?



    Screen grab, for those with ad blocks:

    upload_2018-11-20_12-55-34.png

    One hiccup though: if your OCC drops into a ring holder, the bulk of this pad would prevent you removing it, unscrewing it, whatever.

    Maybe near 100% cargo cult, and just more frequent monitoring/vigilance in winter is all you need.
     
    #1228 Mendel Leisk, Nov 20, 2018
    Last edited: Nov 20, 2018
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  9. qettyz

    qettyz Active Member

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    Ihave thought 12v heater wire what i would put along the tubes and around the OCC. Then insulate slew over tubes and insulate OCC.
    Im more worried that tubes would freeze during driving than bottom of the OCC what would not be so big deal.
    But still, its just a thought...

    Here at finland it is not permitted to put 230v heaters/wires etc under hood if it is not designed to be there. I.e it needs to have armored wires for example. Insurance companies will wash their hands off if your car burns.
     
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  10. Georgina Rudkus

    Georgina Rudkus Senior Member

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    A plug in water pipe heater with a built in thermostat would do the same thing. Run the tape down the hoses with a loop around the catch can.

    They are widely available in hardware stores including Home Depot and Lowe's.
     
    #1230 Georgina Rudkus, Nov 20, 2018
    Last edited: Nov 21, 2018
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  11. Mendel Leisk

    Mendel Leisk Senior Member

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    I'm think this is mainly to prevent a PCV clog with dead-cold engine? Hopefully once engine bay is warming it's ok.
     
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  12. paphillyman

    paphillyman Member

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    Ok after reading about the OCC , I ordered one , my question is has anyone installed an OCC without taking the manifold apart or is that a must to get good access to the pvc valve and connect the fuel lines , just got a 2012 with 46,000 on it and figure I might as well get a OCC
     
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  13. Georgina Rudkus

    Georgina Rudkus Senior Member

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    The PCV valve is easily access with the removal of just the front part of the plastic undercover of the engine using a 10mm socket wrench and a small screwdriver to pry out the center of the plastic rivets.

    Easily removing the resonator and air intake box provides additional access from the top. The intake manifold needs not to be removed.
     
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  14. paphillyman

    paphillyman Member

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    ok thank you , should be pretty easy to install then , just have to get under there and check things out
     
  15. Raytheeagle

    Raytheeagle Senior Member

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    We installed @RMB ’s catch can without removing the intake manifold at a previous Bay Area meet;).

    It can be done(y).
     
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  16. Mendel Leisk

    Mendel Leisk Senior Member

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    If you're gonna clean the intake manifold out though, I'd do the pcv (and oil catch can) when the manifold's off.
     
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  17. Raytheeagle

    Raytheeagle Senior Member

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    If the manifold is off, that’s best;).

    But it can be done without the removal of the intake manifold if doing the job on its own without pairing it with any other servicing :).

    Good subtle advice to pair it up though(y).
     
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  18. RMB

    RMB Senior Member

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    At 52k miles last year my PCV valve replacement or manifold cleaning weren’t really due yet so the oil catch can installation was done alone. I later replaced the cheap braided hoses with fuel hoses also without removing intake manifold. (y)

    Total time was about 1 hour for the installation as there was more chitchat than work :ROFLMAO:, but took less than 30 minutes when I replaced the hoses, which is basically the very same procedure as installing OCC all over again, so it’s a fairly simple job.
     
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  19. Jon Watkins

    Jon Watkins Active Member

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    No problem getting to it by just removing the air intake/resonator. Takes an hour or so.
     
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  20. jaspernuts

    jaspernuts Junior Member

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    I had to remove my catch can. Up here in mn, it was full after 300 miles with mostly water condensation. My wife also complained of oil smell at stoplights. Removed the can and smell is gone.
     
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