2011 Prius P0303 cylinder misfire

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Lesdier Ortiz, May 15, 2020.

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  1. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

    Joined:
    Oct 28, 2010
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    Location:
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    Easy.

    Stop driving the car immediately.
    Really.
    Water does not compress well.
    You're safer corresponding with a Nigerian pen-pal than you are with driving a Prius with the death rattle.
    Replace the head gasket.
    Fix the problem(s) that caused the HG failure (EGR and maybe throttle body.)
    Drive another 100,000 miles.

    If you cannot DIY these things you're going to have to do a cost benefit analysis on having it repaired versus dumping the car for another one. If you decide to go the repair route definitely stay far away from a dealership.
    There HAS to be a reputable wrench near the beltway that knows Priuses.

    Best of luck!
     
    #21 ETC(SS), Aug 16, 2023
  2. Brian1954

    Brian1954 Senior Member

    Joined:
    Jan 31, 2021
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    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    What year is your Prius, and how many miles?

    Posted via the PriusChat mobile app.
     
    #22 Brian1954, Aug 16, 2023
    Mendel Leisk likes this.
  3. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

    Joined:
    Oct 28, 2010
    8,028
    6,843
    0
    Location:
    Redneck Riviera (Gulf South)
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Bio says it's a 2011.
    Symptoms suggest it's between 175-225k miles.
    Maybe a wee bit more if the OCI was 10k instead of 5k.
     
    #23 ETC(SS), Aug 16, 2023
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