I can’t believe I fixed my oil burning for $7

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by 6ixPrius, Mar 24, 2021.

  1. 6ixPrius

    6ixPrius New Member

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    My Prius has 343,000km(212k miles) bought used was burning around 1 quart every 2500-3000km

    I did all the usual fixes like pcv, cleaning maf and full tune up.

    finally coming from Honda’s all my life which had valve cover gaskets as routine maintenance item when you do valve adjustment I decided to pull of the valve cover on the Prius

    the gasket was basically baked into the metal and came off in chunks and the rest needed to be scrapped off.

    i replaced it with a new fel pro gasket and now it’s been almost 4000km and only burned 150-200ml of oil.
     
    #1 6ixPrius, Mar 24, 2021
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  2. ChapmanF

    ChapmanF Senior Member

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    Are you sure the oil wasn't just leaking before? Not easy to get into the cylinders and burn, through a valve cover gasket.
     
    #2 ChapmanF, Mar 24, 2021
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Could it be the failing valve cover gasket was letting air get sucked in, messing up PCV valve operation, or pulling oil up into combustion chamber somehow. If OP’s oil consumption has indeed dropped dramatically with that one change, something was going on.
     
    #3 Mendel Leisk, Mar 24, 2021
  4. bisco

    bisco cookie crumbler

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    i can't believe it either
     
    #4 bisco, Mar 24, 2021
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  5. ChapmanF

    ChapmanF Senior Member

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    OIl leaking out of an engine also lowers the level in the crankcase.
     
    #5 ChapmanF, Mar 24, 2021
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  6. jerrymildred

    jerrymildred Senior Member

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    Hooda thunk it, right? :D
     
    #6 jerrymildred, Mar 25, 2021
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  7. kutcht1

    kutcht1 Member

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    So the O.P. found out that his valve cover was leaking? I don't see an explanation other than he states that it was brittle, changed it out and now it burns less.
    TomK
     
    #7 kutcht1, Apr 21, 2021
  8. Rmay635703

    Rmay635703 Senior Member

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    This is a very common issue on the gen I volt, can even cause coolant to disappear

    only difference on the Volt is there is an inner and outer valve cover gasket that require replacement

    Would be excellent if this was the actual issue on all PRII
     
    #8 Rmay635703, Apr 21, 2021
  9. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

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    ....or even many of them.
     
    #9 ETC(SS), Apr 21, 2021
  10. privilege

    privilege Active Member

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    burning oil
    vs
    leaking oil


    they both show on the dipstick, but fixing one does not fix the other.
     
    #10 privilege, Apr 21, 2021
  11. edthefox5

    edthefox5 Senior Member

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    Lots of posters just messing with us....or the world really is going mad.
     
    #11 edthefox5, Apr 21, 2021
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