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2004 Prius Misfiring & Running Very Rough

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by bikeking19, Jun 30, 2018.

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  1. bikeking19

    bikeking19 Junior Member

    Joined:
    Apr 6, 2018
    29
    7
    0
    Location:
    Las Vegas, NV
    Vehicle:
    2006 Prius
    Model:
    II
    I'm positive they're not original I replaced them at 140k. Parts finally got here but with only about an hour of daylight left (no garage) so didn't have enough time to get the valve cover off. The valve cover seems pretty stuck on there even after taking all the bolts off and tapping it with a rubber mallet. Any tips for getting a stuck valve cover off? I'm aware it's aluminum and don't want to score the rim and risk more oil leaks. Hopefully tomorrow I'll be able to get it.
     
    #21 bikeking19, Jul 3, 2018
  2. HV Battery

    HV Battery New Member

    Joined:
    Sep 10, 2018
    22
    6
    0
    Location:
    Oklahoma
    Vehicle:
    2011 Prius
    Model:
    Three
    just take a wire brush wheel to those plugs and clean em up a bit, they'll be good as new. Then pour a little b12 motor treatment down each cylinder and throw the plugs back in. It will smoke like a bandit when you fire it up, prob throw some codes, go drive it hard & it will be good as new in the morning. That's what I did, ...works great!
     
    #22 HV Battery, Sep 10, 2018
  3. HV Battery

    HV Battery New Member

    Joined:
    Sep 10, 2018
    22
    6
    0
    Location:
    Oklahoma
    Vehicle:
    2011 Prius
    Model:
    Three
    ....oh and disconnect & reconnect battery to clear the codes ;)
     
    #23 HV Battery, Sep 10, 2018
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