Loud ticking or knocking noise after headgasket

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Allenk42, Mar 13, 2021.

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  1. Allenk42

    Allenk42 New Member

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    Me and my uncle did a headgasket job on his 2010 Prius hybrid. Everything meant pretty smooth he only had a rough start up before the job and slight white smoke. I just recently graduated from automotive school and did every checklist I could think of. Followed the oem timing chain specs and even got the crank pulley lined up with the timing cover mark. Upon start up there is quite a harsh knocking noise coming from the top end of the motor. I just realized I didn’t torque the crank pulley bolt to spec. Could that be my issue ?
     
    #1 Allenk42, Mar 13, 2021
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    Isn’t that pulley just “along for the ride”? I’d say snug it up to be sure, but got a feeling you’ll be needing to pull it off again soon. Timing chain tensioner didn’t release, or chain is off by a tooth??
     
    #2 Mendel Leisk, Mar 13, 2021
  3. Allenk42

    Allenk42 New Member

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    The codes I got after were p0102 and p3190

    historic faults are p0113/p3191/

    He sprayed out the manifold with brake clean but forget to take out the maf sensor probably why I’m getting one of those faults. Also do I need to pull timing cover to reset tensioner or should I pull the cover just to be safe ?
     
    #3 Allenk42, Mar 13, 2021
  4. Neil_onea

    Neil_onea Junior Member

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    Did you change the air filter? I had the same problem but after changing the filter, the car no longer misfires at startup. Now is just sputters randomly when going up certain hills(which I believe is also a misfire as well). I believe I may need to change an O2 sensor and MAF. Did changing the filter help?
     
    #4 Neil_onea, Mar 13, 2021
  5. Allenk42

    Allenk42 New Member

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    The air filter seems clean nor damaged problem might be from the maf since it was sprayed out. I’ll keep the thread posted when I work on it again
     
    #5 Allenk42, Mar 14, 2021
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