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ploom of black smoke

Discussion in '2nd Gen. Tacomas (2005-2015)' started by jw1983, Mar 1, 2012.

  1. Mar 1, 2012 at 8:37 AM
    #1
    jw1983

    jw1983 [OP] Well-Known Member

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    Yesterday i had left work. I was at a stop sign and gunned it as i pulled away. My co worker said thst there was a ploom of bkack smoke from the exhaust. What could have caused that? Is it normal?
     
  2. Mar 1, 2012 at 8:38 AM
    #2
    Rellik01

    Rellik01 Well-Known Member

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    Too much foot...too little engine
     
  3. Mar 1, 2012 at 8:39 AM
    #3
    aznutx

    aznutx Well-Known Member

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    that you filled up with diesel instead of unleaded
     
  4. Mar 1, 2012 at 8:41 AM
    #4
    jw1983

    jw1983 [OP] Well-Known Member

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    Lol yeah to make myself think i owned a diesel. Hint hint toyota
     
  5. Mar 1, 2012 at 8:44 AM
    #5
    jw1983

    jw1983 [OP] Well-Known Member

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    Warrenty for what that is?
     
  6. Mar 1, 2012 at 9:41 AM
    #6
    HighTQCummins

    HighTQCummins Instagram: stormtrooptaco

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    i think it's just an over fuel situation, I know mine does it from time to time, its too much fuel and not enough air temporarily and the unburnt goes out as black smoke. There is another thread about someone w/ a full catless truck that says his does it bad. for some reason or another these trucks like to run sloppy rich.

    I personally don't think it's anything to worry about, just don't have observant people follow you from now on
     
  7. Mar 1, 2012 at 10:56 AM
    #7
    jw1983

    jw1983 [OP] Well-Known Member

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    Am i going to say theres black exhaust smoke, its under warrenty?
     
  8. Mar 1, 2012 at 10:57 AM
    #8
    Tigahshark

    Tigahshark Senior NEWBIE

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    /\/\ this

    wut?
     
  9. Mar 1, 2012 at 11:02 AM
    #9
    YotaDan

    YotaDan Dan

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    Toyotas always run rich. Part of what helps the engine last forever. When you gun it, the system dumps fuel into the engine trying to make the most power it can. Emissions controls go out the window above 3/4 throttle. Unburnt fuel is black smoke. If you get on it hard shortly after you start the vehicle, there is a good chance that the Cat is not lit yet, and so does not burn up the left over fuel like it normally would.
     
  10. Mar 1, 2012 at 11:03 AM
    #10
    T@co_Pr3runn3r

    T@co_Pr3runn3r XXXXXXXXXXXXXXXXXXX

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  11. Mar 1, 2012 at 11:37 AM
    #11
    jw1983

    jw1983 [OP] Well-Known Member

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    Thats what my co worker who saw it had said. Im just over 8000 kms
     
  12. Mar 1, 2012 at 11:40 AM
    #12
    steve o 77

    steve o 77 braaap

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    that would be blue smoke. Rings are fine.

    it's fuel.
     
  13. Mar 1, 2012 at 11:41 AM
    #13
    jw1983

    jw1983 [OP] Well-Known Member

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    K thx everyone. Im not going to worry about it
     
  14. Mar 1, 2012 at 11:45 AM
    #14
    steve o 77

    steve o 77 braaap

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    I still would do a full throttle run up an on ramp just to blow it out. Going to easy on engines all the time can be just as bad as hammering on them constantly since it builds up carbon on the pistons and valves.
     
  15. Mar 2, 2012 at 8:42 PM
    #15
    joes06tacoma

    joes06tacoma Well-Known Member

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    I live near a 7% highway grade. I've seen every year, make, model vehicle blow black smoke momentarily when people get slowed down and have to accelerate back up to speed. Absolutely normal. Push the pedal to the floor, the PCM goes to full rich fuel mixture for power. A little bit of black smoke at wide open throttle just means everything is working the way it should.

    If you have a ring wear issue, you will be losing oil on the dipstick.

    Your coworker doesn't know what he's talking about.
     
  16. Mar 2, 2012 at 8:51 PM
    #16
    TrdSurgie

    TrdSurgie revised

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  17. Mar 2, 2012 at 11:34 PM
    #17
    Bosmob

    Bosmob Well-Known Member

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    The fuel/air mixture doesn't go to "full rich". That would cause performance to go down.

    The system goes into "open loop" which deactivates the EGR and other emissions related stuff and just runs the engine on a known good fuel/air mixture. This means that it ignores the signal from the O2 sensors which might cause some black smoke.
     

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