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Poor compression cylinder 3,HELP

Discussion in '1st Gen. Tacomas (1995-2004)' started by 98_3RZ_NIC, Dec 16, 2022.

  1. Dec 16, 2022 at 3:52 PM
    #1
    98_3RZ_NIC

    #1
    98_3RZ_NIC [OP] Well-Known Member

    Joined:
    Jan 17, 2021
    Member:
    #353073
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    1,686
    Gender:
    Male
    Vehicle:
    1998 white extended cab
    Bilstein 5100’s with ome 881 coils on lowest setting, JBA upper control arms, LCE header, 31x10.5x15 falken wildpeaks.
    1998 2.7L 273k miles
    I’ve replaced the spark plugs and wires multiple times within the last 2 years. Been getting p0303 and p0300 codes and cel. Any feedback would be appreciated.

    Cylinder 1- 150 psi first try cold
    Cylinder 2- 119 psi first try cold, 90 psi second try cold, 150 psi third try warm
    Cylinder 3- 50 psi first try cold, 60 psi second try warm
    Cylinder 4- 150 psi first try cold
     
    98_3RZ_NIC, Dec 16, 2022
    #1
  2. Dec 16, 2022 at 3:57 PM
    #2
    TnShooter

    #2
    TnShooter The TacomaWorld Stray

    Joined:
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    Deogee
    Vehicle:
    07' TRD Off-Road, Auto
    STOCK
    Leak down test to see where the compression is being lost.

    Are you loosing coolant?
     
    TnShooter, Dec 16, 2022
    #2
    Laxtoy and 98_3RZ_NIC[OP] like this.
  3. Dec 16, 2022 at 4:14 PM
    #3
    maineah

    #3
    maineah Well-Known Member

    Joined:
    Mar 24, 2011
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    #53641
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    Tim
    Maine
    Vehicle:
    4X4 SR5 V6 6spd
    You could check the valve clearance.
     
    maineah, Dec 16, 2022
    #3
    98_3RZ_NIC[OP] likes this.
  4. Dec 16, 2022 at 4:37 PM
    #4
    98_3RZ_NIC

    #4
    98_3RZ_NIC [OP] Well-Known Member

    Joined:
    Jan 17, 2021
    Member:
    #353073
    Messages:
    1,686
    Gender:
    Male
    Vehicle:
    1998 white extended cab
    Bilstein 5100’s with ome 881 coils on lowest setting, JBA upper control arms, LCE header, 31x10.5x15 falken wildpeaks.
    nope
     
    98_3RZ_NIC, Dec 16, 2022
    #4

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