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  1. IwasBirchyFirst
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    2012 Prius - CEL P0301 Cylinder 1 misfire/Engine knocking - FIXED

    2013 model. Rough start/knocking on warm starts, got worse over 2 days. Cylinder 1 misfires code. Bought a plug and coil, but started reading this...
    Post by: IwasBirchyFirst, May 10, 2023 in forum: Gen 3 Prius Care, Maintenance & Troubleshooting
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