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Engine misfire cyl 1, 2, 3.

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Koho, Aug 11, 2019.

  1. Koho

    Koho New Member

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    Location:
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    Vehicle:
    2006 Prius
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    ----USA----
    Hello all,

    I have a 06 Prius with 330k+ miles on her. I'm starting have 2 issues that may be tied to each other.
    1st: The gas bladder will not let me fill more the a few seconds at a time. If I slowly pour gas in I can get about 1.5 gal.
    2nd: cylinders 1 2 3 are misfiring to the point it shakes the whole car. This happens when in park and hybrid battery is charging in idle. When driving and the battery is charging I can feel the shaking, but it is not as bad. When it ideal in natural there is little noise.

    Could this be a a gap issue, or should I look at fuel tank replacement?

    Thanks
     
    #1 Koho, Aug 11, 2019
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    1a. Try another gasoline station to see if it helps to use a different style of fuel pump nozzle.
    1b. Try holding the fuel pump nozzle upside down to see if that makes any difference.
    2. When was the last time the iridium spark plugs were replaced? If not within the last 100K miles, start by replacing them with the correct NGK or Denso iridium plugs.
     
    #2 Patrick Wong, Aug 12, 2019
    SFO likes this.
  3. deletejunkemail

    deletejunkemail Junior Member

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    Could it be water in your cowel clogging and dripping into your engine? I've seen that happen to a prius before. After cleaning the cowel, the drain hole, and replacing the spark plugs, all was well after. I guess ymmv though
     
    #3 deletejunkemail, Aug 12, 2019
  4. Koho

    Koho New Member

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    ----USA----
    Thank you for the reply. I've tried #1, I'll see if #2 works. It has been over 100k miles since plugs were done. I'll try that.
     
    #4 Koho, Aug 14, 2019
  5. Koho

    Koho New Member

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    ----USA----
    Thank you for the quick reply. I'll try that and see if it works.
     
    #5 Koho, Aug 14, 2019
  6. Koho

    Koho New Member

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    Location:
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    2006 Prius
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    ----USA----
    After trying the upside down nozzle, and replacing all 4 spark plugs. I am please to say that she is running in great shape. Next project is fixing the combination meter.
     
    #6 Koho, Aug 22, 2019
  7. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Two
    So was the basic problem that the spark plugs needed to be replaced?
     
    #7 Patrick Wong, Aug 22, 2019
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