NEW!!! Service Bulletin for Engine Knocking at Startup T-SB 0012-10

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by seilerts, Jan 12, 2012.

  1. johnHRP

    johnHRP Member

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    I agree. The main reason why 2015 and up has less issue because it does not burn oil. The new piston rings and piston design really help. Revised head gasket in 2013 help a bit but no oil burning, less carbon on EGR, less carbon in engine, reduce pinging/ preignition, makes head gasket survive longer.
    Burning oil issue is like a snow ball. It causes carbon deposit in engine, clogging EGR valve, increase engine temperature and pinging, blown head gasket, kill catalytic converter. Total the car.
     
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  2. Mendel Leisk

    Mendel Leisk Underfoot

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    Maybe slightly. I think it took the 4th gen EGR revamp to truly fix the problem.
     
  3. johnHRP

    johnHRP Member

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    Yes, but the main reasom we have EGR clogging is oil burning. If someone with 4th gen has oil consumption issue, it will eventually kill the catalytic and clog EGR. Although in slower rate than 3rd gen because of larger passage and EGR after Catalytic. Oil consumption is the main enemy in my opinion. So change it every 5k miles/6 months unless we live in south States and regularly in highway to prevent oil consumption issue.
     
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  4. Mendel Leisk

    Mendel Leisk Underfoot

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    Maybe yes maybe no? I’ve got no oil burning, at 90k kms, but my EGR was carbonning up nicely.

    my 2 cents: the main reason 3rd EGR is clogging is it’s design.
     
  5. johnHRP

    johnHRP Member

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    It is exhaust, carbon will always there. There must be a lot of carbon too in 4th gen but as long as it is not sticky and hardened, EGR will still have enough flow and can still reduce the engine temperature. After Catalytic converter, any oil residue will be burned and will not as sticky as the area before it. If there is no oil consumption, the chance to have sticky sludge is much less than exhaust with oil consumption
     
  6. Rhys Faulkner

    Rhys Faulkner New Member

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    Here is the requirement from the service manual for setting P030x. Since cold start knocking may not happen twice in a row very often, it seems unlikely that it would ever get past the pending state, due to two OBD trip detection logic.
     
  7. Paladain55

    Paladain55 Junior Member

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    Mine looked like it had vegemite in the egr holes lol. Carbon in the egr cooler of course, but the egr passageway pin holes were just full of goop.
     
  8. Paladain55

    Paladain55 Junior Member

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    You only have 90k kms? So 56,000 miles?
     
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  9. Mendel Leisk

    Mendel Leisk Underfoot

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    Yeah something like 93,400 kms. Our usage is tanking, sporadic driving to see our kids, dentist/doctor, occasional outing or shopping trip. We're homebodies, do a lot of walking. This 2010 "might" be our sunset car.
     
  10. Paladain55

    Paladain55 Junior Member

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    Holy cow. You've got at least another 64,000 miles before you should notice any issues at all if we put all of us on a sample curve.
    And you aren't kidding. There's a lot of Toyotas i see around that could possibly attend their owners funeral lol.
     
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  11. chuckiechan

    chuckiechan Member

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    Is there a recall for this problem with 2013’s. We have 10 year here in Calif? So far no trouble codes. Seafoam seems to work until it gets cold again.
     
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