Noise in prius engine

Discussion in 'Gen 3 Prius Technical Discussion' started by Wahid D, Nov 15, 2017.

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  1. Wahid D

    Wahid D Junior Member

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    My prius making noise in engine
    please help me to fix it out and let me know why prius making this kind of noise


     
    #1 Wahid D, Nov 15, 2017
  2. Jayw13702

    Jayw13702 Active Member

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    Whereabouts on the engine are you talking about?
    What kind of noise are you referring to?
    What sort of mileage does the engine have?

    I can hear a tapping noise but I’m not sure if that’s what you are referring to.


    2010 Gen 3
     
    #2 Jayw13702, Nov 15, 2017
  3. Wahid D

    Wahid D Junior Member

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    Sir watch this video again please, the noise is coming from engine's down side and its not tapping noise, noise is like something cracking, engine's total mileage is about 79 thousand and engine performance is good but this noise is really scary :(
     
    #3 Wahid D, Nov 18, 2017
  4. Grit

    Grit Senior Member

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    Camera is panning too much to know where and what sound your talking about
     
    #4 Grit, Nov 18, 2017
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    I think the noise that's bugging him, is this kinda rapid drumming/knocking, intermittent sound, over top of the regular engine sound.
     
    #5 Mendel Leisk, Nov 18, 2017
  6. Jayw13702

    Jayw13702 Active Member

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    Now you have pointed that out I can hear it.
    It sounds like something is loose and banging/rattling about, but what I cannot tell


    2010 Gen 3
     
    #6 Jayw13702, Nov 19, 2017
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  7. bisco

    bisco cookie crumbler

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    is this in the warm up cycle? can you give us more details?
     
    #7 bisco, Nov 19, 2017
  8. Wahid D

    Wahid D Junior Member

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    exactly now you are on point (y) We have checked gear oil, silencer clips all engine shields but all are ok, this noise is in engine, when i start my prius in morning when engine is cold this noise is more than engine voice, but after few minutes its reduce
     
    #8 Wahid D, Nov 20, 2017
  9. Wahid D

    Wahid D Junior Member

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    We have checked gear oil, silencer clips all engine shields but all are ok, this noise is in engine, when i start my prius in morning when engine is cold this noise is more than engine voice, but after few minutes its reduce
     
    #9 Wahid D, Nov 20, 2017
  10. Mendel Leisk

    Mendel Leisk Senior Member

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    Timing chain? Or one of the coolant pumps? Are there two of those?
     
    #10 Mendel Leisk, Nov 20, 2017
  11. Jayw13702

    Jayw13702 Active Member

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    When was the transmission oil changed?


    2010 Gen 3
     
    #11 Jayw13702, Nov 20, 2017
  12. Wahid D

    Wahid D Junior Member

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    may be or may not be, but my mechanic said one of engine connector rad is damage? is it possible?
     
    #12 Wahid D, Nov 20, 2017
  13. Wahid D

    Wahid D Junior Member

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    few days ago before 79 thousand miles, transmission oil was less than 4 liter, 1 liter was less
     
    #13 Wahid D, Nov 20, 2017
  14. Mendel Leisk

    Mendel Leisk Senior Member

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    Piston connecting rod? Yeah, no clue, need more educated ears.
     
    #14 Mendel Leisk, Nov 20, 2017
  15. Wahid D

    Wahid D Junior Member

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    yes, you are right
     
    #15 Wahid D, Nov 20, 2017
  16. Jayw13702

    Jayw13702 Active Member

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    I have a very similar noise in my 2010, it’s now done 141,000 and never had a transmission oil change.
    When I’ve had a listen around for it I would have said it comes from transmission and not engine.
    I have a very limited knowledge of cvt transmission but my first thought was the drive belt making that noise, as it gets warmer the noise stops because whatever it’s running against expands and so reduces the “slack”

    I don’t think that’s a connecting rod, but the only way to check that would be to take the head off and measure the piston against the deck height


    2010 Gen 3
     
    #16 Jayw13702, Nov 20, 2017
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  17. Mendel Leisk

    Mendel Leisk Senior Member

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    This was determined by drained amount, during a replacement?

    The spec'd. amount at replacement is 3.3 liters, so if 3.0 liters drained, that is not far off. Proper level is most simply achieved by filling with the car level, till it's starts coming back out of the fill hole, wait till the overflow subsides, then install fill bolt. Doing this, it takes me a bit over 3.5 lliters, maybe a bit more. There's a small amount of spill involved.

    So, while I don't know enough to comment on it being the transaxle, at least the level doesn't seem overly low. How did that drained fluid look. If it's first drain I'd expect it to be quite dark.
     

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    #17 Mendel Leisk, Nov 20, 2017
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  18. bisco

    bisco cookie crumbler

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    what engine oil are you running?
     
    #18 bisco, Nov 20, 2017
  19. Dxta

    Dxta Senior Member

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    I thinkbyou need to post more details on the noise from that car. You've got different noises just coming out from the engine

    Dxta
     
    #19 Dxta, Nov 20, 2017
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  20. Joele3

    Joele3 Active Member

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    This sounds exactly like the knocking from a blown head gasket. Misfire at start up or condensation inside the intake manifold.
     
    #20 Joele3, Nov 20, 2017
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