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Misfire number 2 cylinder

Discussion in 'Gen 3 Prius Technical Discussion' started by beam99, Dec 6, 2019.

  1. beam99

    beam99 Junior Member

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    I’m having a issue with my car gen 3 1.8 petrol
    I’m experiencing a misfire on no 2 cylinder under load,
    No DTC, but I can see on diagnostic it’s misfiring only on that cylinder, went tru all the checks, everything checked out good, the only way I can get rid of the misfire is to disconnect egr valve or blank it, car drives perfect then but I’m stuck with the insufficient egr flow DTC,
    I swapped the egr off another car just to be sure it wasn’t that, but still same issue,
    Anyone ever had this issue before? Can’t see how the manifold wod cause this issue.
    Thanks
     
    #1 beam99, Dec 6, 2019
  2. bisco

    bisco cookie crumbler

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    lots of people. gen 3 is known for it. if you've swapped plugs and coils, and cleaned the complete egr circuit, you might have a bad head gasket
     
    #2 bisco, Dec 6, 2019
    scona likes this.
  3. Grit

    Grit Senior Member

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    Get a compression test on #2 before throwing parts at it. The result will tell you what to do next.
     
    #3 Grit, Dec 6, 2019
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    And/or leak-down test. Per @bisco, misfire on cylinder one or two is very common, and usually head gasket failing.

    How many miles?

    Ever cleaned the Exhaust Gas Recirculation system, and intake manifold (essentially part of the EGR)?
     
    #4 Mendel Leisk, Dec 6, 2019
    scona likes this.
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