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Has Toyota Changed the 4.0???

Discussion in '2nd Gen. Tacomas (2005-2015)' started by 07 sport 4x4, May 26, 2011.

  1. May 26, 2011 at 7:12 PM
    #1
    07 sport 4x4

    07 sport 4x4 [OP] Well-Known Member

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    I noticed on my 2007 Tacoma that the sticker under the hood shows the valve clearance specs, and on my moms 2010 Tacoma it says no adjustments needed. I was just curious if they had changed something. I searched and didn't find anything, Both have the 4.0 V6.
    DSCF4120.jpg

    DSCF4118.jpg
     
  2. May 26, 2011 at 7:14 PM
    #2
    07 sport 4x4

    07 sport 4x4 [OP] Well-Known Member

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    I was just wandering why the 2010 didnt have the valve clearance specs?
     
  3. May 26, 2011 at 7:20 PM
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    JasoTaco

    JasoTaco Well-Known Member

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    Your mom has a Tacoma, that is a cool mom.
     
  4. May 26, 2011 at 7:21 PM
    #4
    07 sport 4x4

    07 sport 4x4 [OP] Well-Known Member

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    Yep, my parents bought one in 07 and sold it to me when i turned 16, they liked it so good they bought another!
     
  5. May 26, 2011 at 7:24 PM
    #5
    tacobo670

    tacobo670 if you have to ask, u can't afford it

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    cuz they have hydraulic self-adjusting lifters. n the new engines have dual vvti.
     
  6. May 26, 2011 at 7:27 PM
    #6
    tacobo670

    tacobo670 if you have to ask, u can't afford it

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    regardless, its the new 4.0L they all have hydro lifters.
     
  7. May 27, 2011 at 11:21 AM
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    JKD

    JKD Well-Known Member

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    None of the service information I've seen has said that--although I wasn't specifically looking for it. Can you cite a source that says current single-VVTi 4.0 engines have hydraulic lash adjusters/lifters?
     
  8. May 27, 2011 at 11:26 AM
    #8
    crf69

    crf69 scraping my emblems off my plasti-dip

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    ummm yeah
    no.

    shim under bucket

    DAMB
    direct acting mechanical bucket
     
  9. May 27, 2011 at 11:32 AM
    #9
    65tacodude

    65tacodude Well-Known Member

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    Ive also notice the older 4.0 on the fuel door says use premium and in 09 they say you can run regular...if that has something to do with it.
     
  10. May 27, 2011 at 11:41 AM
    #10
    65tacodude

    65tacodude Well-Known Member

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    Gotcha. Kinda figured it was something like that. Thanks for clearing it up for me.
     
  11. May 27, 2011 at 11:58 AM
    #11
    Blackened Taco

    Blackened Taco Well-Known Member

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    You are dead on the money. None of the 4.0 Tacoma motors need valve adjustments at any time. . As matter of fact I do not know of any late model Toyota that does not have a hydrolic valve train.
     
  12. May 27, 2011 at 4:07 PM
    #12
    JKD

    JKD Well-Known Member

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    Those of you who don't think any modern Toyota engines need valve adjustments, can you explain why has the ?
     
  13. May 27, 2011 at 4:29 PM
    #13
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    The 1GR is a shim under bucket. I dont know of many Toyota engines that HAVE hydro lifters. Can you cite examples?
     
  14. May 27, 2011 at 4:31 PM
    #14
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Although the FSM gives the procedure, I dont know of any Tacoma engine that has needed any adjustments to the valves. THe ONLY exception I have seen, is my buddies 2.7 had his adjusted at 495,000 miles.
     
  15. May 27, 2011 at 4:44 PM
    #15
    maineah

    maineah Well-Known Member

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    There is no service but they are shimmed lifters or more accurately cam followers and the followers them self are selective. I tried to find the mileage chart I think it was 80K any way you are supposed to listen to them and if they are noise they need adjustment. I believe all the V6 truck engines have shimmed valve clearance.
     

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