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P0302 cylinder 2 misfire detected

Discussion in 'Gen 3 Prius Main Forum' started by Prsguy, Mar 16, 2022.

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  1. ASRDogman

    ASRDogman Senior Member

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    You should look inside the cylinder and see if the piston is cleaner than the others.
    Maybe #1 cylinder is cleaner also? Do you see moisture in there?????
    Sounds like the begining of a failed head gasket....

     
    #21 ASRDogman, Dec 29, 2022
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    Did you clean the EGR and intake (including the EGR passages in the latter)? At what miles?
     
    #22 Mendel Leisk, Dec 29, 2022
  3. PriusCamper

    PriusCamper Senior Member

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    The harness was my first thought, but odds of it being intermittent wouldn't be as likely.
     
    #23 PriusCamper, Dec 29, 2022
  4. Mgoddard92

    Mgoddard92 Junior Member

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    Yes I cleaned the egr system and intake when I did the head gasket, so 2 weeks ago 198000 miles
     
    #24 Mgoddard92, Dec 29, 2022
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  5. Mgoddard92

    Mgoddard92 Junior Member

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    I just did head gasket and am hoping the short drive to town with a failing, mines spins a few hundred rpm above the targeted range, water pump didn’t blown a new gasket
     
    #25 Mgoddard92, Dec 29, 2022
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  6. Mgoddard92

    Mgoddard92 Junior Member

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    Well guys it looks like changing the #2 spark plug took care of the misfire.
     
    #26 Mgoddard92, Dec 31, 2022
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  7. ASRDogman

    ASRDogman Senior Member

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    hope this resolves the problem permantly...

     
    #27 ASRDogman, Dec 31, 2022
    Last edited: Jan 1, 2023
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