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P0301 second time….

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by refusedone, Aug 24, 2024 at 1:17 PM.

  1. refusedone

    refusedone Junior Member

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    Hi all,
    I have a 2010 Prius with 200k+ miles on it. About a year ago I got the P0301, cylinder 1 misfire. The Spark plug was fouled, so I replaced all the plugs and the coils to be safe. I have recently gotten the code again, with knocking at start up.

    The engine does burn a lot of oil. I’m seeing also the thread about the intake manifold possibly being an issue?

    This time the spark plug is not fouled, I cleaned it anyway and still knocking at startup. Any ideas of what to try next would be greatly appreciated, thanks!

    PS, I do have Techstream will that likely help me determine the issue more precisely?
     
    #1 refusedone, Aug 24, 2024 at 1:17 PM
  2. Tombukt2

    Tombukt2 Senior Member

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    The fire in your cylinder is being put out by seepage from the head gasket more than likely Very common in this FXE version of the two Z engine so maybe give that a look with a boriscope or something
     
    #2 Tombukt2, Aug 24, 2024 at 3:40 PM
    refusedone likes this.
  3. refusedone

    refusedone Junior Member

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    Thank you…does anyone know if it’s possible to buy a refurbished engine with the better piston rings that don’t leak oil? I’m wondering if it may be time to swap engines completely, given the oil consumption issue….
     
    #3 refusedone, Aug 24, 2024 at 5:49 PM
  4. refusedone

    refusedone Junior Member

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    2010 Prius
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    Three
    Thank you, I will look into that…does anyone know of a place to get rebuilt engines with upgraded piston rings so the oil consumption isn’t an issue?
     
    #4 refusedone, Aug 24, 2024 at 6:06 PM
  5. Brian1954

    Brian1954 Active Member

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    #5 Brian1954, Aug 24, 2024 at 7:51 PM
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