2006 Prius - Crunching sound & Loss of Oil

Discussion in 'Gen 2 Prius Main Forum' started by KitsuneVoss, May 31, 2025.

  1. KitsuneVoss

    KitsuneVoss Member

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    I was driving from work and got a crunching sound. I could have hit something and thought I did for a few moments. I thought I hit some rusted metal for a moment by the sound. In the car, engine off, waiting for a tow but trying to get some information if someone knows. Do not have a good jack to look under the car. I did have to drive it for a short distance to get somewhere safe.

    Did my engine block likely go or is there another possible cause? I don't think it is the oil filter because I felt it. Wondering if there is an oil line or something it could be other than the block?

    I have the 2009 with a working engine as well. How crazy a job is it for me to be able to change out the engines if it comes down to it? How heavy is a Prius engine? I have seen videos of changing them out although have not watched them. The one I saw was broken into parts.
     
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    Presumably you’ve checked the dipstick?
     
  3. KitsuneVoss

    KitsuneVoss Member

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    I have been checking it every couple of weeks.
    When I stopped, there was still a little oil on the stick though if that is what you are asking?
     
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  4. Mendel Leisk

    Mendel Leisk Senior Member

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    Yes.
     
  5. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    I don't think any oil is routed outside of the block in any version of the Prius. No hoses or pipes involved. (Most manufacturers avoid doing so for simplicity, cost & reliability purposes all in one)

    Might just have hit some road debris and dragged it?

    Look for the oil. Puddle under the car? Trail behind you? Oily film all over the back bumper? The low oil may not be related to the crunchy noise.

    Good luck!
     
  6. KitsuneVoss

    KitsuneVoss Member

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    It is engine block related
    20250531_164436.jpg 20250531_164421.jpg
     
  7. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    ooh, yeah. That one's done, sorry.

    A (borrowed or rented) engine hoist is really nice for swaps, but not the only way. Sometimes the header beam across a garage door opening is fit to be modified with a simpler hoist, block & tackle or even a come-along tool.
     
  8. KitsuneVoss

    KitsuneVoss Member

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    I have never done an engine but a person who did not remove the inverter replaced the engine in 16 hours and never replaced an engine. Another person, with a shop, replaced one in six hours. They also did not remove the inverter.

    Since I need to do two engines, I am best guessing 48 hours total? A full week of work? I guess I could also plan on two weeks with a little less crazy work?

    Some questions?
    Best video for replacing the engines / engine swap?
    Do I need to remove the inverter? Two videos did not while two did?
    Best place to rent an engine hoist? What I am seeing, I can get a new one from Amazon cheaper than renting one for a week, but maybe another option?
    Get a pair of tarps to cover car while working?
     
  9. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Everything is local with rental. I'm sure there are locations where buying one costs less than a rental for the duration you need.

    You can also consult craigslist and other marketplaces to see about a secondhand one, and of course that would work for ultimate disposition of a purchased one after the project is complete.
     
  10. KitsuneVoss

    KitsuneVoss Member

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    Two more questions:
    Could something on the road have done this so might be able to claim something on my insurance? I don't think so but best to ask?
    Second, is it within my skill and abilities to replace the engine? I have done three battery swaps, replaced an inverter, replaced two sets of fuel injectors, replaced the front end body panels of two Prius, etc. On other cars, non Prius, I have pulled the catalytic converter and the transmission.
     
  11. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    I'd say it's possible in the same way anything is possible, like a meteorite strike.

    But if you hit a foreign object that was exactly the right shape to penetrate the bottom/front of the block without also damaging the HV cabling and / or the oil filter & housing that would really be remarkable. It would almost have to be like a cheval de frise to score a hit like that.

    In a Prius with a history of oil loss I'd say a connecting rod bearing failure is a lot more likely.
     
  12. KitsuneVoss

    KitsuneVoss Member

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    That is what I figured. . . . .Not going to play games then.
    I had no oil loss before this though.

    As far as engine hoist, I can easily remove the hood. Done it before. How about building an A-Frame from 2x4s and just use an engine leveler and chain hoist? Do I need a need an engine leveler or a chain hoist good enough? Might be cheaper than a cherry picker? The engine is suppose to weight +/- about 200 lbs?

    I am on gravel so have issues rolling an engine hoist as well. Going to be a few days, at best, before I can get anything started. I can put the car in neutral to move her to another place although I think I lose that option once I pull the batteries.
     
    #12 KitsuneVoss, May 31, 2025
    Last edited: May 31, 2025
  13. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    My bad, I must have been remembering someone else's car.

    Seen that done but I'm the wrong kind of carpenter to advise you on it.

    If the car is on level ground it will help considerably when it is time to push the car out of the way to get the engine onto a cart or a stand or pickup bed etc. Temporarily over-inflating the car's tires will make the pushing a bit easier as well, just remember to back it down before driving again.
     
  14. KitsuneVoss

    KitsuneVoss Member

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    If you see pictures, I can probably build it :)

    Can I roll the car with no batteries connected? I have two roommates to help me push cars but I thought they would become effectively unmovable once I disconnect the batteries? Putting them in neutral involves putting them in aux mode, pressing on the brakes, and then holding in neutral for a few seconds.

    Of note, I have both an old Ranger and a cart that can carry up to 400 lbs. So okay there.
     
  15. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    I know you'll need to defeat the park lock somehow, but once that is done the car will roll. Be ready with chocks.

    This resembles ones my friends have built.
     
  16. KitsuneVoss

    KitsuneVoss Member

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    If you, or someone else, knows how, please let me know? I am thinking of alternatives but want options?
     
  17. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    This thread may have some helpful advice?

    ChapmanF's suggestion about pulling the fuse looks like the most useful thing. Be plenty careful, since you are defeating a significant safety system on purpose. Use chocks.

    And there I am not not telling anyone...
     
  18. KitsuneVoss

    KitsuneVoss Member

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    Okay, this is what I figure. . . . . I have a couple of people who may know someone who has an engine hoist. Offer $50 to borrow it for three weeks. Likely need it for less than a week but better to plan for extra time. Once you have one, all it will do is take up space if you do not use it. I have no purpose in keeping one myself but cheaper to buy than rent. I would rent one but it is about $35 a day, so quickly adds up to the cost of buying one. If not, get one from Harbor Freight for about $270. They have coupon sales so that is an option as well. Lay down 1 x 8s so that it will roll better than on gravel. More than Amazon but I can pick it up when I need it and even if overrated in quality or weight capacity, Prius engines are light. Drop it on the cart, which can carry 400 lbs.

    I am figuring if I use the amateur at 16 hours, figure that is pulling one engine and putting a new engine in. Lets say I am slower than him, so 20 hours to replace the engine. If I assume 8 hours to pull the other, maybe even less because I will know what I am doing after the first, so under 30 hours total. Crazy 30 hours but doable. Learn on the ruined engine because if I screw it up, it does not matter.

    Do I need a leveler or will cargo straps do okay?
     
  19. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Levelers help a lot, but I wouldn't call it a must-have- I've swapped a lot of engines but none were in a Prius so this is just general background advice. If the engine is already on the lightweight side some manual wiggling and shoving can spare you that expense.
     
  20. highmilesgarage

    highmilesgarage Active Member

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    you can rent a cherry picker from the parts store.