1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

08 Tacoma 4.0L V6 head gasket replcement question

Discussion in 'Technical Chat' started by epmedia, Jul 13, 2012.

  1. Jul 13, 2012 at 4:28 PM
    #1
    epmedia

    epmedia [OP] New Member

    Joined:
    Jul 13, 2012
    Member:
    #82543
    Messages:
    4
    Gender:
    Male
    Hi folks,
    I don't have a tech manual for this '08 4.0L V6 yet.
    Middle, driverside (#4 ?) cylinder is getting coolant in it (pressure tested to verify).
    I'd like to start tearing into it before the tech manual arrives.

    It looks like the timing cover needs to be removed?
    Is that true, or do I just need to remove the timing cover bolts on that head?

    All in all, it looks like it's going to be a pita! :mad:

    Thanks for any info I can get from you folks.
    Robert
     
  2. Jul 13, 2012 at 4:29 PM
    #2
    KenLyns

    KenLyns 8.75" Third Member

    Joined:
    May 23, 2010
    Member:
    #37674
    Messages:
    29,363
    Gender:
    Male
    Belly of the Beast
    Vehicle:
    4x4 TRD Off-Road Full-Auto
    LED Headlights, Volant CAI, 32" Duratracs
  3. Jul 13, 2012 at 5:01 PM
    #3
    epmedia

    epmedia [OP] New Member

    Joined:
    Jul 13, 2012
    Member:
    #82543
    Messages:
    4
    Gender:
    Male
    Wholey Smoley!
    Even have to remove the oil pan to change the head gasket(s)?
    Is it possible to replace the HG without removing the timing cover?

    Thanks for the link :)
     
  4. Jul 13, 2012 at 5:25 PM
    #4
    KenLyns

    KenLyns 8.75" Third Member

    Joined:
    May 23, 2010
    Member:
    #37674
    Messages:
    29,363
    Gender:
    Male
    Belly of the Beast
    Vehicle:
    4x4 TRD Off-Road Full-Auto
    LED Headlights, Volant CAI, 32" Duratracs
    I think you may get oil leaks if you don't take the timing cover off and reseal it properly as the last step.
     
  5. Jul 13, 2012 at 5:46 PM
    #5
    epmedia

    epmedia [OP] New Member

    Joined:
    Jul 13, 2012
    Member:
    #82543
    Messages:
    4
    Gender:
    Male
    I'll see if the head will come off while leaving the timing cover bolted to the rest of the engine (fingers crossed there are no guide sleeves).
    If it looks like I will not be able to seal it up, that would be terrible.
    It was intended to be a quick and dirty fix :rolleyes:

    Thanks again.
     
  6. Jul 13, 2012 at 6:05 PM
    #6
    KenLyns

    KenLyns 8.75" Third Member

    Joined:
    May 23, 2010
    Member:
    #37674
    Messages:
    29,363
    Gender:
    Male
    Belly of the Beast
    Vehicle:
    4x4 TRD Off-Road Full-Auto
    LED Headlights, Volant CAI, 32" Duratracs
    I've heard comments about the engine bay layout, where items not expected to be replaced often are difficult to access. Take a look at starter replacement in the manual. :D
     
  7. Jul 16, 2012 at 1:26 AM
    #7
    epmedia

    epmedia [OP] New Member

    Joined:
    Jul 13, 2012
    Member:
    #82543
    Messages:
    4
    Gender:
    Male
    Wholey smoley.
    The front of the engine (timing chain cover, etc.) does have to come off:
    With the timing chain cover installed, cannot even get the cam sprockets off, to remove the cams, to remove the head bolts.

    And I see now, why the oil pan is suppose to be removed:
    All the old sealer crap falls into the oil pan, and there are the o-rings for the oil passage from the pan to the timing chain cover!

    :facepalm

    I have the timing chain cover removed.
    I need to wait for daylight hours to use an impact to get one of the cam sprocket bolts off :(
     
  8. Jul 18, 2012 at 6:47 PM
    #8
    MountainEarth

    MountainEarth Well-Known Member

    Joined:
    Feb 1, 2010
    Member:
    #30519
    Messages:
    2,481
    Gender:
    Male
    First Name:
    Bryan
    CO
    Vehicle:
    2010 TRD OR Access
    Leer 100XR Shell, BedRug mat - comfy sleeping, GT Covers microfiber seat covers, BFG All Terrains 265/70r16, Dashmat, Antennax 13" shorty antenna, Weathertech liners, Ultra Gauge, Avid Light Bar, PIAA 520 ATPs, one old dog
    An 08 with a headgasket problem? How is that not under warranty?
     
  9. Jun 12, 2016 at 4:57 PM
    #9
    Jbriggsnh

    Jbriggsnh Member

    Joined:
    Jun 12, 2016
    Member:
    #189431
    Messages:
    20
    Gender:
    Male
    Vehicle:
    2004 4runner 4.0
    @epmedia - I know it's been a while but did you complete the head gasket repair? I have an '04 4runner that needs it and the Advanced Autoparts online service manual does not have you removing the timing chain cover. Any other hints before I start?
     
  10. Jun 13, 2016 at 6:25 PM
    #10
    RobertHyatt

    RobertHyatt You just can't fix stupid...

    Joined:
    Mar 12, 2015
    Member:
    #150757
    Messages:
    495
    Gender:
    Male
    First Name:
    Robert
    Birmingham AL
    Vehicle:
    2007 Tacoma Prerunner SR5
    How are you going to disengage the timing chain, which has to come off before you can think about getting the head off? Normally you have to "clean" the front of the engine (get everything off that blocks the timing chain cover, then remove the cover, the chain, then remove the intake and exhaust. It is a PITA but doable.
     
  11. Jun 13, 2016 at 7:10 PM
    #11
    Jbriggsnh

    Jbriggsnh Member

    Joined:
    Jun 12, 2016
    Member:
    #189431
    Messages:
    20
    Gender:
    Male
    Vehicle:
    2004 4runner 4.0
    The Toyota Service Manual says that 3 special tools to remove the crankshaft pulley. What did you use? Any tips going forward?
     

Products Discussed in

To Top