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Piston soak can fix this right

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Bryanesk, Jul 15, 2024 at 6:36 PM.

  1. Bryanesk

    Bryanesk Junior Member

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    Hi so did some maintenance in my engine today found some oil inside the intake manifold a good amount of carbon in the throttle housing and then found a ton of carbon in my cylinders. What’s the damage or even the future looking like for the car just hit 200k. Really want it to last atleast 3. Pictures go from 1 cylinder to 4
     

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    #1 Bryanesk, Jul 15, 2024 at 6:36 PM
  2. pasadena_commut

    pasadena_commut Senior Member

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    Oil inside the intake manifold is "normal".

    Pool of oil in throttle body | PriusChat

    If you're still worried take a picture of the oil in the manifold and post it here for comment.

    In theory you might have a bad PCV which would make it more oily than usual. Kind of a pain, as PCV replacements go, but if you really want to you could put in a new OEM one.

    What did the spark plugs look like? If things were really going wrong they would be filthy. If the plugs look normal I wouldn't worry about any of this.
     
    #2 pasadena_commut, Jul 15, 2024 at 6:51 PM
  3. rjparker

    rjparker Tu Humilde Sirviente

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    Piston soaks fix nothing
     
    #3 rjparker, Jul 15, 2024 at 7:45 PM
    Tombukt2 likes this.
  4. Bryanesk

    Bryanesk Junior Member

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    PCV valve just replaced the spark plugs the threads got some oil on them but nothing dripping was replaced couple months back
     
    #4 Bryanesk, Jul 15, 2024 at 7:49 PM
  5. Bryanesk

    Bryanesk Junior Member

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    heard some people had some luck. Of course it’s not gonna fix it out right. But better the engine wouldnt you say
     
    #5 Bryanesk, Jul 15, 2024 at 7:50 PM
  6. JohnnyPR

    JohnnyPR Junior Member

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    All i know soak will not have any effect but doesn't hurt to do that. Good luck
     
    #6 JohnnyPR, Jul 15, 2024 at 8:53 PM
  7. pasadena_commut

    pasadena_commut Senior Member

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    A few people have put oil catch cans on. Search this site for more info. I would guess that if there is no oil going into the cylinders (it isn't getting past the rings too) and everything else is normal that some of that carbon should burn off, eventually.
     
    #7 pasadena_commut, Jul 15, 2024 at 9:12 PM
  8. pasadena_commut

    pasadena_commut Senior Member

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    Only time I have had oily plug threads was on a car with a leaky valve cover gasket. Were the bottoms of the coil packs also oily?
     
    #8 pasadena_commut, Jul 15, 2024 at 9:15 PM
  9. Bryanesk

    Bryanesk Junior Member

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    No the coils were completely dry just the threads had oil
     
    #9 Bryanesk, Jul 15, 2024 at 9:17 PM
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