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valve clatter at start up 3.4L

Discussion in '1st Gen. Tacomas' started by bowyer2002, Jan 24, 2012.

  1. Jan 24, 2012 at 5:47 PM
    #1
    bowyer2002

    bowyer2002 [OP] always tinkering

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    Sometimes, I get a little valve clatter on start-up, then it goes away.
    In my 3.4L with 183K - I've owned this truck since day one, use Casterol GTX 5w30 changed with filter every 3-4K.
    I don't know if the valves are adjustable, I've owned VWs and know how to adjust valves but thought this engine didn't require it.
    Any thoughts?
    Thanks!
     
  2. Jan 24, 2012 at 5:48 PM
    #2
    steve o 77

    steve o 77 braaap

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    You could check clearences. The valves on the 3.4L are a pain to adjust though being shim in bucket design.
     
  3. Jan 24, 2012 at 6:13 PM
    #3
    jflan

    jflan Well-Known Member

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    Some discount filters don't have a backflow preventer.
    I got into some of these and clatter at start up was noticeable.

    Cold weather will contribute as well.
     
  4. Jan 25, 2012 at 5:40 AM
    #4
    bowyer2002

    bowyer2002 [OP] always tinkering

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    Maybe it's just the colder weather, as I am using OEM filters.
     
  5. Jan 25, 2012 at 8:39 AM
    #5
    steve o 77

    steve o 77 braaap

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    FWIW my truck does the same thing on cold mornings.

    Im also running the OEM filter.
     
  6. Jan 25, 2012 at 10:12 AM
    #6
    Dwill817

    Dwill817 Well-Known Member

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    I thought our motors were just notoriously loud and just click and stuff...
     
  7. Jan 25, 2012 at 6:05 PM
    #7
    Phuket

    Phuket Well-Known Member

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  8. Jan 26, 2012 at 6:58 PM
    #8
    cory02taco

    cory02taco Well-Known Member

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    all valves require maintainance. think about how many times that valve has hit the seat over the last 183k miles. if you have never had them adjusted, thats a likley cause. shim and bucket valves can suck, but should still be checked, although i dont know the service interval.
     
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