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Cylinder 2 is misfiring

Discussion in '3rd Gen 4Runners (1996-2002)' started by Mavelmay, Apr 25, 2021.

  1. Apr 25, 2021 at 6:51 AM
    #1
    Mavelmay

    Mavelmay [OP] New Member

    Joined:
    Apr 25, 2021
    Member:
    #21123
    Messages:
    1
    Vehicle:
    1999 gray 4 runner
    Cyclinder 2 is misfiring after up to temp and when we shut off the truck for 10 to 30 minutes. It is not the coil pack we moved the coil pack and it stayed in same spot. New plugs and fuel filter. Any kind of ideas would be helpful at this point.
     
  2. Apr 25, 2021 at 7:17 AM
    #2
    Moon Landing

    Moon Landing AFFTC 1967/68 Eddies Air Patch

    Joined:
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    First Name:
    Jer
    La Quinta, Ca. AKA "The Skillet"
    Vehicle:
    Moon Rock 4Runner
    Nam 68/69
    Nothing original about me but here's some stuff to consider.

    "Lean misfire causes that only affect one cylinder include a dirty fuel injector, an open or shorted fuel injector, or a problem in the fuel injector driver circuit (wiring or PCM). Compression problems that may cause a misfire include a burned exhaust valve, bent intake or exhaust valve, or leaky head gasket."

    https://www.underhoodservice.com/common-causes-misfire-codes/
     
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  3. Apr 25, 2021 at 8:00 AM
    #3
    brownersd

    brownersd You are the weakest link, buh-bye!

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    Sean
    Humble, Texas
    Vehicle:
    2020 MGM 4Runner TRD Off-Road Premium

    ^^^ This

    Cheers,

    Sean
     
    negusm likes this.
  4. Apr 25, 2021 at 4:43 PM
    #4
    Ahdofu

    Ahdofu New Member

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    Matt
    Vehicle:
    1997 4Runner SR5, V6, Auto, 4WD
    Check the resistance across the three ignition wires (cylinders 2, 4 & 6). What I have learned is that before an ignition wire goes completely bad, you start seeing a varying resistance. The good wires should show a steady value and the bad one either a varying resistance or a high one. Alternatively it may be possible to swap the cylinder 2 wire with another cylinder's. Give that a try and or if you have access to a new ignition wire, give that a try. Once you've ruled out ignition as a source, next would be fuel (injector) or compression.
     
    negusm likes this.
  5. Apr 25, 2021 at 10:01 PM
    #5
    Waynes

    Waynes New Member

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    [​IMG]

    Above is a good guide to reading plug condition.
     
    negusm likes this.

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