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Cleaned intake manifold and EGR pipe and it truly feels smoother!

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by 5 Speed, Sep 19, 2017.

  1. 5 Speed

    5 Speed Member

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    I spent a few hours removing and cleaning my intake manifold and EGR pipe and while I was at it replaced the PCV valve and I truly feels like the engine is smoother and so far gained about 1MPG in the last 100 miles. I know that this isn't scientific but I swear the engine is smoother and the MPG slightly better. There was a considerable pool of oil right below the throttle body and it was dirty throughout the whole intake. I used about two cans of brake cleaner to clean out all the gunk inside the manifold, EGR pipe and cleaned up the throttle body with carb cleaner when I had it off. I replaced the PCV valve and the manifold gasket. With a Prius with 150K I figured it was time. The
    Nutz About Bolts videos are so helpful!!!! Thank you!
     
  2. Dan05979

    Dan05979 Member

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    I'm doing the same exact thing right now, nutzaboutbolts is a godsend. I'm going to upload some pics.
     
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  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Yeah I've just cleaned ours, the intake manifold, same story: lots of oil, and grungy bits in the EGR passages. The MAP sensor (below throttle body was just SOAKED in oil. I removed it and cleaned by dipping in isopropyl alcohol, hopefully that's compatible, seems ok. Only 70K km's, but that oil was in there quite some time back, I noticed when doing an in situ throttle body clean, some time back.

    I just carefully peeled off all gaskets, and reused. And did not disconnect throttle body coolant lines, just unbolted and lifted out of the way.

    Also, installed an Oil Catch Can, between PCV valve and intake manifold. I'm hoping this will stop a return of the oil, time will tell.

    I'm going to take on the EGR valve and cooler very soon, have a few necessary items coming.

    And yeah: kudos to @NutzAboutBolts for the videos.
     
  4. 5 Speed

    5 Speed Member

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    Going to do the EGR valve and cooler this weekend, needed to get the tool to remove the studs and could not do it without the @NutzAboutBolts videos!!!
     
  5. Raytheeagle

    Raytheeagle Senior Member

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    You could do it without the videos, but life is challenging enough;).

    The E8 torx socket and ratcheting wrenches are invaluable for the job:). As someone whose done the job 3 times, you learn something each time you do it;).

    Good luck this weekend(y)
     
  6. NutzAboutBolts

    NutzAboutBolts Senior Member

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    What a savage! Now you're just abusing the EGR and it doesn't like you touching it :ROFLMAO::ROFLMAO::ROFLMAO:
     
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  7. Raytheeagle

    Raytheeagle Senior Member

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    The egr system was on 3 different Prii ;).

    But each time I do the work, I make sure to talk nicely to the ingoing system:whistle:.

    Maybe @mmmodem will decide his is up next(y).
     
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  8. mmmodem

    mmmodem Senior Taste Tester

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    HAHAHA, maybe on a cold day in November. :sneaky:
     
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  9. Mendel Leisk

    Mendel Leisk Senior Member

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    @Raytheeagle you may not be an abuser but you are obviously a masochist, to take that on more than once, lol.
     
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  10. Dan05979

    Dan05979 Member

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    I want to upload some pics from my recent work, but everytime i share the image code from photobucket it's not showing on a "preview thread"
     
  11. Raytheeagle

    Raytheeagle Senior Member

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    Each time there has been more than just me;).

    If it were just me, I'd agree. You want a real challenge, try swapping the cooler and valve with the windshield wiper cowling on. That can be real fiddly:whistle:.

    Good luck with your clean and replace work:). Can't wait to see what a low mileage system looks like(y).
     
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  12. Raytheeagle

    Raytheeagle Senior Member

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    So I should clean @Rebound 's cooler sooner rather than later then:).

    It'll be clean and ready when you are(y).
     
  13. NutzAboutBolts

    NutzAboutBolts Senior Member

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    You just like to clean everyone's dirty pipe huh? Lol jp

    The more you do, the more experience you learn :)
     
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  14. Raytheeagle

    Raytheeagle Senior Member

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    When you have 2 kids and live 5 doors down from your inlaws, sometimes an excuse to be out in the garage is welcome;).

    But learning is something that is a nice side benefit(y).
     
    #14 Raytheeagle, Sep 20, 2017
    Last edited: Sep 20, 2017
  15. Dan05979

    Dan05979 Member

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    Hey NUTZ, I want to thank you very much for your videos. So far I have changed my oil, transmission fluid, doing the whole EGR intake thing at the moment. I wish there was a person like you who also does F10 BMW 5 series in depth like you so I can save some big $$ on mine.
     
  16. NutzAboutBolts

    NutzAboutBolts Senior Member

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    I soon will be in that predicament, but I don't know if I will have time to do any work in the garage. lol
     
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  17. NutzAboutBolts

    NutzAboutBolts Senior Member

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    good work!

    I wish I could afford a BMW lol...
     
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  18. Mendel Leisk

    Mendel Leisk Senior Member

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    I can get a 12 mm long socket plus extension on that hidden lower EGR nut, after a lot of strife, but so far getting a ratchet wrench locked on the end, or preassembling the whole thing and fishing it in there, nope.

    Just practice, and I packed it in for the night. I'm hoping it's slightly easier with the cowl off.

    Oh and my hands look almost as bad as @StarCaller's now. :oops:
     
  19. Raytheeagle

    Raytheeagle Senior Member

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    Keep practicing ;). The ratcheting wrench is particularly handy for the lower rear nut on the cooler. An actual ratchet there will try your patience:(.

    But patience is a virtue (y).
     
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  20. Mendel Leisk

    Mendel Leisk Senior Member

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    Managed it. Cracked it slightly looser for now. :)
     
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