Not a lot of miles, but believe the engine's days are numbered

Discussion in 'Newbie Forum' started by Brad from Ohio, Nov 24, 2021 at 10:00 PM.

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  1. Brad from Ohio

    Brad from Ohio New Member

    Joined:
    Nov 2, 2021
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    Location:
    Cleveland
    Vehicle:
    2011 Prius
    Model:
    Four
    2011 Prius well maintained with only 127k miles. Runs fine and looks fine, but beilieve the cold starts are going to eventually kill it way before its time.
    Since 120k have performed all the most common recs to address the issue including cleaning the EGR pipe and cooler, cleaning the intake manifold, replacing the spark plugs, replacing the PCV valve, installing an oil catch can, replacing the spark plugs, replacing the air filter, and replacing the fuel injectors.
    After all that has been done, the cold starts are less rough. With the return of the cold weather, sure enough the cold startup rattle/rumble noises are back. Occasionaly the engine still sounds like it fighting itself upon startup.
    The radiator reservoir fluid level remains stable at the FULL line, so doesn't appear to be a blown head gasket issue at this point.
    Believe that tolerating occasional rough starts since around 70k miles or so, may have compromised the integrity of some of the pistons, rods, rings, or whatever it is making the cold start rattle sounds.
    Admit I often ponder "just how long to eventually a cold start, blows a rod or a piston and takes out this otherwise excellent running engine?" Wonder if it'll make it through another Winter.
    It's soon to be an 11 year old car with 130k+ Northeast Ohio(harsh environment) miles on it. Would really like to get 15+ years or 200k+ miles out of this Prius. But will sell it for parts rather than throw a few thousand+ into an engine rebuild.
    Putting the car into Reverse right away after turning the Power on seems to prevent/minimize this nasty phenomenon. As the car coasts slowiy down the flat driveway, for whatever reason, the ICE comes on without making the nasty rumble/valve/rod shake it would have if left to warm up in Park mode. Has anyone else done this? Is the ECU changing the fuel/air ratio or something? Any science as to what is actually occuring? And might doing this delay the demise of the engine?
     
    #1 Brad from Ohio, Nov 24, 2021 at 10:00 PM
    Last edited: Nov 24, 2021 at 11:23 PM
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    94,654
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    does it burn any oil?
     
  3. vvillovv

    vvillovv Senior Member

    Joined:
    Mar 19, 2013
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    Location:
    NY
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Plus
    dreaded gen3 EGR Head Gasket issue?
    If it is and you caught it in time, count your blessings!
     
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