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Cylinder 6 misfire

Discussion in '2nd Gen. Tacomas (2005-2015)' started by eastonK, Sep 16, 2019.

  1. Sep 16, 2019 at 6:34 AM
    #1
    eastonK

    eastonK [OP] New Member

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    I’m having issues with my 2005 Tacoma 4.0. I had engine shake at startup so I changed plugs. It was due anyway. Ran fine for 4 months. Filled the tank one day and came out the next time to start it and it was shaking and threw a cylinder 6 misfire code. Changed plug in cylinder 6 and it was good for 2 days then it threw the same code again. Changed plug again and this time I switched coil packs. Ran ok for day or two and yep you guessed it. Cylinder 6 misfire again. This time I got new plug and changed oil because it was due. Put a can of Seafoam in it and filled it with 93 octane. Ran for a day and threw code 306 again. I’m running out of ideas. Any suggestions would be great.
     
  2. Sep 16, 2019 at 7:00 AM
    #2
    Fullboogie

    Fullboogie Well-Known Member

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    Who wants to say it? I'm not going to...
     
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  3. Sep 16, 2019 at 7:02 AM
    #3
    JaCado

    JaCado I can see your soul

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    Welcome to TW :notsure:
    Or clean the maf and throttle body?
     
  4. Sep 16, 2019 at 7:11 AM
    #4
    BassAckwards

    BassAckwards Well-Known Member

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    Run a compression test on all cylinders. It's likely cylinder 6 will show the issue. My guess is headgaskets

    How many miles on the truck
     
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  5. Sep 16, 2019 at 7:27 AM
    #5
    Torspd

    Torspd Tor-nication

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    Hmm. Blowing coolant or no?

    If no, swap that coil pack with another coil pack, and see if the misfire follows that coil pack.
     
    BassAckwards likes this.
  6. Sep 16, 2019 at 7:31 AM
    #6
    Sharpish

    Sharpish Well-Known Member

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    Head gasket?
     
  7. Sep 16, 2019 at 8:20 AM
    #7
    Fullboogie

    Fullboogie Well-Known Member

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    I hate seeing these posts. Hard starting, misfiring that doesn't follow a swapped coil - kinda points to one thing. I hope it's not the case, though.
     
  8. Sep 16, 2019 at 8:34 AM
    #8
    PzTank

    PzTank The Original Social Distancer

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    Patience grasshopper...

    At some point, there won’t be any ‘05s and early ‘06es left.
     
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  9. Sep 16, 2019 at 1:26 PM
    #9
    eastonK

    eastonK [OP] New Member

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    The truck has 145,000 on it. Plug hasn’t been wet any of the times I swapped it. Head gasket is what I was thinking but not what I wanted to hear. $$$$$$
     
    BassAckwards likes this.
  10. Sep 16, 2019 at 1:57 PM
    #10
    BassAckwards

    BassAckwards Well-Known Member

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