BG hybrid repair kit question

Discussion in 'Gen 3 Prius Technical Discussion' started by Burningoil, Nov 7, 2022.

  1. Tombukt2

    Tombukt2 Senior Member

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    Seems funny to me that a manufacturer is going to be touting low tension oil control rings if that's what I'm understanding here holy be Jesus. So what about the other two compression rings they don't matter or are they also low tension too I don't know I haven't done any of the research and how much of this low tension ring business equals miles per gallon more likely tenths of miles per. gallon
     
  2. Burningoil

    Burningoil New Member

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    Update looks like pvc failed
     

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  3. Mendel Leisk

    Mendel Leisk Underfoot

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    How many miles? Even with functional PCV valve things will look thus.
     
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  4. mikey_t

    mikey_t Active Member

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    The mentioned in their original post that it's around 170K miles. And your comment is correct, I replaced my PCV valve and my EGR components looked like that about 35K miles after my first EGR cleaning and hellish oil burning for some of that.
     
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  5. Burningoil

    Burningoil New Member

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    Right im soaking the intake manifold in degreaser overnight. Im going to install oil catch can once I burn the hoses. Then use bg hybrid repair kit and see if it stops burning as much. Maybe the pcv isn’t bad but I don’t think it was ever replaced. I don’t know if I should clean the erg cooler I heard it’s a hassle. Half the battle for me was taking off the clips for sensors.
     
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  6. Burningoil

    Burningoil New Member

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    Is your car still burning oil?
     
  7. mikey_t

    mikey_t Active Member

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    No, the head gasket started seeping oil so I got a rebuild at HybridPit. It runs amazing now.

    When it was burning oil at a quart every 3000 the BG set minimized it to a quart every 5000 for a while. At some point I had the intake manifold off to replace the PCV, which didn't improve anything regarding the burning, but I saw that the intakes were clean as a whistle. A huge difference from when I cleaned my EGR and it looked like a demon had barfed into them so I know for a fact that the BG 44K and EPR were doing their jobs. So with this in mind when my engine oil burning fell of a cliff it had to have been something else; maybe leaky valves seals, maybe the leaky head gasket, or both. I wish I knew.
     
  8. mikey_t

    mikey_t Active Member

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    You need to clean that too. It's a hassle but worth it since it's the most important part.
     
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  9. Tombukt2

    Tombukt2 Senior Member

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    Your EGR cooler cools the gases coming from the exhaust which is as far as I could understand it is a bad thing for the exhaust gas because it starts to coke and carbonize and do all the things it does and then it gets cooled where it just deposits in the cooler builds up and generally makes a mess I guess so it seems to me that you'd want to be pulling this thing at some kind of mileage interval say 60,000 something along those lines so I just got two or three coolers one's just come back from the machine shop getting tanked and clean you look through it it's whistle clean and all the ports and little waves you can see right through when you hold it up to the light. The one that I just removed from the car when I hold it up to the light you can clearly see what's clogged what isn't and what is passing. So it is obvious that things are happening in this cooler and clogging it up everyday you drive. Those EGR gases in most vehicle help cool the cylinder temps to keep knocking and pre-ignition down I don't know what else it might do on a Prius but that's that. So you might want to keep that part clean and clean it about every 60,000 mi or have a set up where you can swap them out to me the swapping out is the quickest there's one always at the ready on the bench and there's always one getting dirty in the car pretty simple.
     
  10. Mendel Leisk

    Mendel Leisk Underfoot

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    See first couple of links in my signature. There’s some labour reducing tips to make this go smoother.
     
  11. Burningoil

    Burningoil New Member

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    Looks like I’m doing egr cleaning now
     
  12. Burningoil

    Burningoil New Member

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    Cleaning egr is a pain

    One side looks good the other still has carbon. I tried oxiclean with hot works pretty well. I'm going to pressure wash it tomorrow
     

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  13. Raytheeagle

    Raytheeagle Senior Member

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    Pressure washer is the way to go;).

    Good luck (y).
     
  14. ASRDogman

    ASRDogman Senior Member

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    OVEN CLEANER! It will eat the carbon.
    Pressuer washer clears/cleans it out.
    Spray in both ends several times. Wear rubber gloves! It will foam, and settle in,
    spray again. ETC..... Let it soak for 30 minutes or so, then use the pressure washer.


     
  15. nicoj36

    nicoj36 Member

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    I second oven cleaner. But instead of pressure washer, I use boiling water. I have an electric kettle that boils in 3 mins. I pour it in the EGR after letting the oven cleaner sit. Melts all the carbon down the drain.
     
  16. Burningoil

    Burningoil New Member

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    Oven cleaner it is tomorrow and pressure on Thanksgiving. Right it have it in a bucket with a waterpump and water heater. Water was clear. Waterpump is on one the opening on the egr. I put a few scoops of oxiclean in the water
     

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  17. ASRDogman

    ASRDogman Senior Member

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    212 degree water doesn't do much as the exhaust gases are 1500 degrees or higher.

    Other methodes work, but take hours and hours of work to do. Oven Cleaner and pressure
    washer take minutes....

     
  18. Mendel Leisk

    Mendel Leisk Underfoot

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    Instead of soaking in voluminous tub of solution: put rubber stopper in one end; takes only 140 cc to fill. Use hottest tap water wth about a rounded tablespoon of Oxi.

    Just doing it myself, albeit with not much miles since last time. Likely the last time for me too, considering vehicle age and very low usage. Was doing spark plugs so thought why not.

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    Even though it’s looking pretty dang clean now, close inspection shows zones still with a carbon skin, and rinses still getting it out, so I’ll keep it up. Have plenty to do anyway, with the valve, and the intake manifold.

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    about 15 min later, still getting stuff:

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    @Raytheeagle: I got the dang valve cap screws loose. First warmed up valve “ears” at screws, with a heat gun, then chunk of vine maple to protect the studs, set on chopping block, and some moderate taps, did the trick. :)

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    #38 Mendel Leisk, Nov 24, 2022 at 8:51 AM
    Last edited: Nov 24, 2022 at 10:58 AM
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