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Engine sounds like it is working hard after 10K service

Discussion in 'Gen 4 Prius Main Forum' started by F1Prius, Sep 12, 2017.

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  1. F1Prius

    F1Prius New Member

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    I have a 2017 Prius 4 Touring that just had the 10K service; oil change and tire rotation. I notice immediately that the engine sounds like it is working hard when accelerating. My mpg has drop from 50'ish to around 40. I've double check the oil level and it is fine and new. This is 4 days after the 10K service at the Toyota dealer.

    Has anyone experience this? When I write working hard, I can hear the engine sound like it is grinding harder than before the 10K service. The Bridgestone Ecopia Run Flats are a joke for noise. But I can heard the difference.

    If this does not change in the next few days, I am going back to the dealer.
     
    #1 F1Prius, Sep 12, 2017
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    Is that just autocorrect playing silly beggars?? Anyway, speaking of tires, were you running higher pressures, and maybe they dropped them to spec?
     
    #2 Mendel Leisk, Sep 12, 2017
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  3. kithmo

    kithmo Couch Potato

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    Did they use the correct 0W-20 oil ?
     
    #3 kithmo, Sep 12, 2017
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  4. Prodigyplace

    Prodigyplace Senior Member

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    Are brakes sticking?
    Definitely check tire pressures. When I had my 5k service the paperwork said the tires were set at 32 :eek: Fortunately they were at s more reasonable 38.
    I did my 10K oil change myself
     
    #4 Prodigyplace, Sep 12, 2017
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  5. FuelMiser

    FuelMiser Senior Member

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    Maybe when they rotated the tires, they changed sides (left to right, cross rotate) and now the tread is running in the opposite direction. This may cause additional "drag" changing the noise level and lowering MPG. Happened to me once when I put snow tires on in the wrong direction of rotation (different from first year). Made a huge difference.
     
    #5 FuelMiser, Sep 12, 2017
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  6. bisco

    bisco cookie crumbler

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    did they run the 12v flat?
     
    #6 bisco, Sep 13, 2017
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