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    Quick Links: Best gear lube for rear diff Pre-runner sounds like it's running on two cylinders on start up Looking to quiet down/remove rasp from 4cyl exhaust 2005 4cyl spark plug change Absolute best tranny fluid to use Body Armor Rear Bumper on a 4 Cyl.

2.7 sound

Discussion in '4 Cylinder' started by kcChiefs, Dec 6, 2018.

  1. Dec 6, 2018 at 4:04 PM
    #1
    kcChiefs

    #1
    kcChiefs [OP] Well-Known Member

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    Ok.. this might be a stupid question. Just gotta 2018 sr accesses cab with 2.7 . Every time when i turn my truck off I hear this sound coming from engine, its like air release sound...is this normal?
     
    kcChiefs, Dec 6, 2018
    #1
    u wish u could ride likes this.
  2. Dec 6, 2018 at 4:06 PM
    #2
    vrod671

    #2
    vrod671 The Okayest Member

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    Yes, normal.
     
    vrod671, Dec 6, 2018
    #2
    kcChiefs[QUOTED][OP] likes this.
  3. Dec 6, 2018 at 4:08 PM
    #3
    kcChiefs

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    kcChiefs [OP] Well-Known Member

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    Thanks vrod671, i am very new with this engine.
     
    kcChiefs, Dec 6, 2018
    #3
    u wish u could ride likes this.
  4. Dec 8, 2018 at 6:32 AM
    #4
    dirtdigginjoe

    #4
    dirtdigginjoe Resident meth-head

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    More specifically, it's the Secondary Air Injection System you're hearing. It's the pump that sits right above your exhaust manifold.

    Completely normal to hear on cold starts and shutdowns. Just another emissions device from Toyota.
     
    dirtdigginjoe, Dec 8, 2018
    #4
    kcChiefs[OP] and Paul631 like this.
  5. Dec 8, 2018 at 2:25 PM
    #5
    kcChiefs

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    kcChiefs [OP] Well-Known Member

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    Thanks man..
     
    kcChiefs, Dec 8, 2018
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    dirtdigginjoe[QUOTED] likes this.

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