1. Attachments are working again! Check out this thread for more details and to report any other bugs.

EGR Cleaning: What did I get myself into?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Bay Stater, Jan 1, 2018.

  1. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Did this assembly breathed?
     
  2. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    For those that have done the EGR assembly replacement and cleaning the related parts, did you disconnected the 12 volt battery first? Did you disabled the traction battery too? Thanks for any advice. :unsure:
     
    Raytheeagle and mjoo like this.
  3. mjoo

    mjoo Senior Member

    Joined:
    Nov 9, 2016
    1,105
    1,311
    12
    Location:
    Michigan
    Vehicle:
    2010 Prius
    Model:
    III
    Yes and yes. The traction battery is most important and easier to disconnect

    Pixel XL ?
     
    Bay Stater likes this.
  4. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,251
    15,474
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Nope to both.
     
    mikey_t and m.wynn like this.
  5. m.wynn

    m.wynn Senior Member

    Joined:
    Oct 24, 2013
    684
    1,226
    0
    Location:
    Queensbury, NY
    Vehicle:
    2014 Prius
    Model:
    Three
    Nope and nope.
     
    Mendel Leisk and Raytheeagle like this.
  6. kc410

    kc410 Active Member

    Joined:
    Nov 26, 2013
    261
    250
    0
    Location:
    2010 Prius IV
    Vehicle:
    2015 Prius
    Model:
    Four
    I've done the whole EGR system twice, swapping in new/clean EGR Cooler + valve & cleaning the EGR pipe & intake manifold each time.
    I do not disconnect the 12V batt. or disable the traction battery.

    The second swap out came after ~10K. The ICE started setting an engine lean code & running as if it was lean. Eventually I found the EGR valve stuck open about 1/16". After swapping in the now cleaned original valve & cooler the Prius is back to perfect at 236K.

    An interesting observation: 10K miles on my ~220K engine resulted in the EGR cooler being >50% plugged. I'm using a quart of oil every 3-4K. For me, the purpose of installing an OCC was to stop a substantial amount of oil from reaching the combustion chamber. In my case the OCC(s) are trapping <5% of the oil the ICE consumes I also find that my best OCC is the intake manifold. I have an OCC installed & after that I have an inline air line filter installed. Both collect small amounts of oil, but the real efficient OCC is the intake manifold!
     
    #66 kc410, Mar 4, 2018
    Last edited: Mar 4, 2018
  7. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Today is the day! EGR system restoration and other cleaning tasks.(y)
    IMG_20180310_104648212.jpg IMG_20180310_111100270.jpg
     
  8. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    1st task wiper removal and spark plug replacement.
     
    qettyz, m3pare and mjoo like this.
  9. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Wiper assembly finally removed. I have to thank @NutzAboutBolts for those fine DIY videos. I knew what to do! Step by step.
    IMG_20180310_120919459.jpg IMG_20180310_120904567.jpg IMG_20180310_113650306.jpg IMG_20180310_115709167.jpg
     
  10. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Spark plugs done. The old spark plugs look good. No signs of oil burning. Funny that I had to fish the spark plugs out. :ROFLMAO:
    IMG_20180310_124453506.jpg IMG_20180310_131340333.jpg IMG_20180310_124855754.jpg
     
  11. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,474
    38,106
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Now just the easy part, hehe...

    Take the intake airbox off too, I think? And again, I'd recommend to drain 2 liters of coolant at the radiator spigot, then the EGR cooler removal can be spill-free, as long as you lift it out carefully.

    Are you going to pull the intake manifold off too? In for a penny, in for a pound? FWIW I didn't replace any gaskets, and it worked out. Only 70K kms in my case though.
     
    kc410 and Bay Stater like this.
  12. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,251
    15,474
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    No magnetic spark plug wrench in your tool chest:whistle:?
     
  13. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Cleaned the throttle body, and EGR pipe. Drained some coolent to prevent a mess. IMG_20180310_164358010.jpg IMG_20180310_154216104.jpg IMG_20180310_154229594.jpg IMG_20180310_163910727.jpg IMG_20180310_164428743.jpg IMG_20180310_164358010.jpg IMG_20180310_154216104.jpg IMG_20180310_154229594.jpg IMG_20180310_163910727.jpg IMG_20180310_164428743.jpg IMG_20180310_163608486.jpg IMG_20180310_163615375.jpg
     
    sorrywereclosed, RMB, m3pare and 4 others like this.
  14. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    I don't even have a socket that has the built-in sleeve.
     
    RMB, NutzAboutBolts and Raytheeagle like this.
  15. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Yes to all.
     
    Mendel Leisk likes this.
  16. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,251
    15,474
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Sounds like you might be in for a belated birthday present ;).

    It is a handy tool (y).
     
    Bay Stater and NutzAboutBolts like this.
  17. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    I now have the intake manifold off. In process of cleaning it.
     
    RMB, NutzAboutBolts and Raytheeagle like this.
  18. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Intake manifold before cleaning.
    IMG_20180310_170942563.jpg IMG_20180310_171754240.jpg IMG_20180310_171033609.jpg IMG_20180310_171023991.jpg IMG_20180310_171749147.jpg
     
    sorrywereclosed, RMB, m3pare and 3 others like this.
  19. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four
    Intake manifold after cleaning.
     

    Attached Files:

    sorrywereclosed, RMB, m3pare and 4 others like this.
  20. Bay Stater

    Bay Stater Senior Member

    Joined:
    Mar 3, 2016
    534
    771
    0
    Location:
    Central Mass
    Vehicle:
    2013 Prius
    Model:
    Four