Clicking sound when stepping slightly on gas engine.

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by ratanakly, Apr 24, 2021.

  1. ratanakly

    ratanakly New Member

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    2010 Prius
    Model:
    Five
    Hello everyone,
    I am having clicking sound when my Toyota prius 2010 was trying to charge the hybrid battery at low two bar and stepping slightly on gas engine. This usually happen at the point Stop of traffic light, i have replaced the sparkplug, coil, and cleaned intake manifold, egr system including cooler but the sound have not gone.
    Please help!
    TQ

    Posted via the PriusChat mobile app.
     
    #1 ratanakly, Apr 24, 2021
  2. rjparker

    rjparker Tu Humilde Sirviente

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    Possible pinging/preignition caused by carbon buildup. Most evident with a low hv battery on initial acceleration. If you have access to high octane gas, eg around 93 US standard, try a tank. If the sound goes away it is pinging.
     
    #2 rjparker, Apr 24, 2021
  3. ratanakly

    ratanakly New Member

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    Five
    #3 ratanakly, May 23, 2021
  4. rjparker

    rjparker Tu Humilde Sirviente

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    That sounds like head gasket.
     
    #4 rjparker, May 23, 2021
    ratanakly likes this.
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    How many miles on it?
     
    #5 Mendel Leisk, May 23, 2021
  6. ratanakly

    ratanakly New Member

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    2010 Prius
    Model:
    Five
    Dear all,

    My car is about 120 mile and the Coolant level is okay. I am trying to record its sound but can not upload here, hope that the below link is worked.

    Link Sharing

    Tq,

    Posted via the PriusChat mobile app.
     
    #6 ratanakly, Jun 18, 2021
    Mendel Leisk likes this.
  7. Jenny2010Prius

    Jenny2010Prius Junior Member

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    Vehicle:
    2024 Prius Prime
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    SE
    Have you found out the cause of the noise?

    We started to hear some kind of quick clicking noise when accelerating lightly with gas engine after 260K KM (160K mile) with our 2010 Prius. Doesn't matter if the engine is cold or warm. Most noticeable at lower speed (may due to lower tire/road noise). No noise when the gas engine is off, i.e. the car runs on battery only.

    It sounds like some thin sheet metal vibrating under the chassis. Checked for loose exhaust pipe or heat shield. But all parts are secure & not loose.

    Also just cleaned intake manifold, EGR pipe/valve/cooler, PCV valve not that long ago in 2022.
     
    #7 Jenny2010Prius, Jul 21, 2023
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