1. Attachments are working again! Check out this thread for more details and to report any other bugs.

2014 Prius Plug-in cylinder 1 misfire

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by Adam Guerra, Jun 12, 2020.

  1. Adam Guerra

    Adam Guerra New Member

    Joined:
    Jun 12, 2020
    1
    0
    0
    Location:
    Ventura
    Vehicle:
    2014 Prius
    Model:
    Plug-in Base
    Hey everyone, about 9 months ago I bought a used 2014 Prius Plug-in. Recently I started having misfires in the engine. I took it to the dealership and at the time it was only bad spark plugs that weren't changed by the previous owner. Now slightly later I have a check engine light and an even stronger misfire. Again I find myself at my local dealership and they are saying the problem is deeper than just spark plugs, or coil packs. They said it could be something in the cylinder or cylinder head. They are estimating my costs at least at 4 grand. Any ideas what the problem could be and what I could be paying if I took it somewhere else? Thank you.
     
  2. QuantumFireball

    QuantumFireball Active Member

    Joined:
    Mar 22, 2016
    416
    267
    0
    Location:
    Ireland
    Vehicle:
    2012 Prius Plug-in
    Blocked EGR system can lead to serious knocking/pinking, and head gasket failure if it is left long enough.
     
    Scarface2005 and bisco like this.
  3. Rmay635703

    Rmay635703 Senior Member

    Joined:
    Oct 16, 2016
    2,567
    1,595
    0
    Location:
    Somewhere in Wisconsin
    Vehicle:
    2013 Chevy Volt
    Model:
    N/A
    EGR system and cylinder misfiring | PriusChat

    EGR & Intake Manifold Clean Results | PriusChat
     
    Scarface2005 likes this.
  4. Woodst0ck

    Woodst0ck New Member

    Joined:
    Jun 25, 2020
    1
    2
    0
    Location:
    Ventura
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base

    I’m down 5k for the blown head gasket and then some. Get it fixed ASAP or it’s a hugeee repair.
     
    Scarface2005 and bisco like this.
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,571
    48,862
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    how many miles on her when she blew?
     
  6. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,571
    48,862
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    how many miles on her?