Coolant loss after recent drain and fill?

Discussion in 'Gen 3 Prius Technical Discussion' started by Noahdoge, Jul 21, 2021.

  1. Noahdoge

    Noahdoge New Member

    Joined:
    Jul 13, 2021
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    Location:
    Mississippi
    Vehicle:
    2012 Prius
    Model:
    Two
    Hello,

    Last week I changed both my inverter and engine coolant. I did only fill right above the low line as I thought the other line (middle connection line for engine side) was the “full”. Yesterday I noticed that the engine coolant dropped just a hair below the low so about 1 in. I topped it off to the actual full mark but now it has me worried. After driving on the highway for 25 minutes I opened the hood and used my flashlight to check all the vacuum lines, water pumps or any sign of coolant loss. I couldn’t find any evidence that there was any loss. Now I’m thinking I may have coolant leaking into the engine which could result in a blown head gasket.

    I just ordered all the equipment to clean/change the complete EGR system as well as intake manifold and set up an OCC. is this even worth doing since I probably have some kind of internal engine problems? Thinking about just selling the car and buying a used RAV4, unless you think I can fix it by doing all the EGR work.

    140,000 miles
    No codes
    No problems
    No knocking
    No oil burning or discolor
    New spark plugs
     
  2. bisco

    bisco cookie crumbler

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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
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    Plug-in Base
    i woud watch it for awhile before making a decision, it might be fine
     
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  3. Noahdoge

    Noahdoge New Member

    Joined:
    Jul 13, 2021
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    Location:
    Mississippi
    Vehicle:
    2012 Prius
    Model:
    Two
    Thanks! I’ll keep an eye on it daily. I haven’t found anything on how much is too much loss to point to the bad cylinder. It has knocked two or three times before, but that was in January, in 20*F weather. nothing else wrong with it.

    Does a clogged EGR/ intake manifold system cause loss of coolant?
     
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